88351794561 has 4 divisors (see below), whose sum is σ = 117802392752. Its totient is φ = 58901196372.

The previous prime is 88351794551. The next prime is 88351794563. The reversal of 88351794561 is 16549715388.

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 de Polignac number, because none of the positive numbers 2^k-88351794561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88351794563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14725299091 + ... + 14725299096.

It is an arithmetic number, because the mean of its divisors is an integer number (29450598188).

Almost surely, 2^88351794561 is an apocalyptic number.

It is an amenable number.

88351794561 is a deficient number, since it is larger than the sum of its proper divisors (29450598191).

88351794561 is a wasteful number, since it uses less digits than its factorization.

88351794561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29450598190.

The product of its digits is 7257600, while the sum is 57.

The spelling of 88351794561 in words is "eighty-eight billion, three hundred fifty-one million, seven hundred ninety-four thousand, five hundred sixty-one".