88251928981 has 4 divisors (see below), whose sum is σ = 89076713472. Its totient is φ = 87427144492.

The previous prime is 88251928969. The next prime is 88251928991. The reversal of 88251928981 is 18982915288.

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 88251928981 - 2⁵ = 88251928949 is a prime.

It is a super-2 number, since 2×88251928981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88251928991) 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, 412392085 + ... + 412392298.

It is an arithmetic number, because the mean of its divisors is an integer number (22269178368).

Almost surely, 2^88251928981 is an apocalyptic number.

It is an amenable number.

88251928981 is a deficient number, since it is larger than the sum of its proper divisors (824784491).

88251928981 is a wasteful number, since it uses less digits than its factorization.

88251928981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824784490.

The product of its digits is 6635520, while the sum is 61.

The spelling of 88251928981 in words is "eighty-eight billion, two hundred fifty-one million, nine hundred twenty-eight thousand, nine hundred eighty-one".