115513780501 has 4 divisors (see below), whose sum is σ = 132015749152. Its totient is φ = 99011811852.

The previous prime is 115513780469. The next prime is 115513780507. The reversal of 115513780501 is 105087315511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115513780501 - 2⁵ = 115513780469 is a prime.

It is a super-2 number, since 2×115513780501² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115513780507) 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 3 ways as a sum of consecutive naturals, for example, 8250984315 + ... + 8250984328.

It is an arithmetic number, because the mean of its divisors is an integer number (33003937288).

Almost surely, 2^115513780501 is an apocalyptic number.

It is an amenable number.

115513780501 is a deficient number, since it is larger than the sum of its proper divisors (16501968651).

115513780501 is an equidigital number, since it uses as much as digits as its factorization.

115513780501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16501968650.

The product of its (nonzero) digits is 21000, while the sum is 37.

The spelling of 115513780501 in words is "one hundred fifteen billion, five hundred thirteen million, seven hundred eighty thousand, five hundred one".