115651011521 has 8 divisors (see below), whose sum is σ = 121634175744. Its totient is φ = 109808627760.

The previous prime is 115651011473. The next prime is 115651011533. The reversal of 115651011521 is 125110156511.

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

It is a cyclic number.

It is not a de Polignac number, because 115651011521 - 2¹⁸ = 115650749377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115651011551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35193431 + ... + 35196716.

It is an arithmetic number, because the mean of its divisors is an integer number (15204271968).

Almost surely, 2^115651011521 is an apocalyptic number.

It is an amenable number.

115651011521 is a deficient number, since it is larger than the sum of its proper divisors (5983164223).

115651011521 is an equidigital number, since it uses as much as digits as its factorization.

115651011521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70390231.

The product of its (nonzero) digits is 1500, while the sum is 29.

The spelling of 115651011521 in words is "one hundred fifteen billion, six hundred fifty-one million, eleven thousand, five hundred twenty-one".