15715715730 has 64 divisors (see below), whose sum is σ = 44311736448. Its totient is φ = 3516802560.

The previous prime is 15715715713. The next prime is 15715715737. The reversal of 15715715730 is 3751751751.

15715715730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (15715715737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1827379 + ... + 1835958.

It is an arithmetic number, because the mean of its divisors is an integer number (692370882).

Almost surely, 2^15715715730 is an apocalyptic number.

15715715730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15715715730 is an abundant number, since it is smaller than the sum of its proper divisors (28596020718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15715715730 is a wasteful number, since it uses less digits than its factorization.

15715715730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663371.

The product of its (nonzero) digits is 128625, while the sum is 42.

It can be divided in two parts, 15715 and 715730, that added together give a triangular number (731445 = T₁₂₀₉).

The spelling of 15715715730 in words is "fifteen billion, seven hundred fifteen million, seven hundred fifteen thousand, seven hundred thirty".