15031400690 has 8 divisors (see below), whose sum is σ = 27056521260. Its totient is φ = 6012560272.

The previous prime is 15031400639. The next prime is 15031400693. The reversal of 15031400690 is 9600413051.

It can be written as a sum of positive squares in 2 ways, for example, as 13419137281 + 1612263409 = 115841^2 + 40153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×15031400690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15031400693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751570025 + ... + 751570044.

Almost surely, 2^15031400690 is an apocalyptic number.

15031400690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15031400690 is a deficient number, since it is larger than the sum of its proper divisors (12025120570).

15031400690 is a wasteful number, since it uses less digits than its factorization.

15031400690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503140076.

The product of its (nonzero) digits is 3240, while the sum is 29.

The spelling of 15031400690 in words is "fifteen billion, thirty-one million, four hundred thousand, six hundred ninety".