115661620502 has 4 divisors (see below), whose sum is σ = 173492430756. Its totient is φ = 57830810250.

The previous prime is 115661620493. The next prime is 115661620511. The reversal of 115661620502 is 205026166511.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (115661620493) and next prime (115661620511).

It is a super-2 number, since 2×115661620502² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28915405124 + ... + 28915405127.

It is an arithmetic number, because the mean of its divisors is an integer number (43373107689).

Almost surely, 2^115661620502 is an apocalyptic number.

115661620502 is a deficient number, since it is larger than the sum of its proper divisors (57830810254).

115661620502 is an equidigital number, since it uses as much as digits as its factorization.

115661620502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57830810253.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 115661620502 in words is "one hundred fifteen billion, six hundred sixty-one million, six hundred twenty thousand, five hundred two".