100515601551 has 8 divisors (see below), whose sum is σ = 134374420480. Its totient is φ = 66833591832.

The previous prime is 100515601507. The next prime is 100515601619. The reversal of 100515601551 is 155106515001.

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

It is not a de Polignac number, because 100515601551 - 2²³ = 100507212943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100515601051) 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, 44200975 + ... + 44203248.

It is an arithmetic number, because the mean of its divisors is an integer number (16796802560).

Almost surely, 2^100515601551 is an apocalyptic number.

100515601551 is a deficient number, since it is larger than the sum of its proper divisors (33858818929).

100515601551 is an equidigital number, since it uses as much as digits as its factorization.

100515601551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88404605.

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 100515601551 in words is "one hundred billion, five hundred fifteen million, six hundred one thousand, five hundred fifty-one".