88245516631681 has 4 divisors (see below), whose sum is σ = 88246910404692. Its totient is φ = 88244122858672.

The previous prime is 88245516631661. The next prime is 88245516631717. The reversal of 88245516631681 is 18613661554288.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17486447622400 + 70759069009281 = 4181680^2 + 8411841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88245516631681 is a prime.

It is a super-2 number, since 2×88245516631681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88245516631621) 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, 696791530 + ... + 696918163.

It is an arithmetic number, because the mean of its divisors is an integer number (22061727601173).

Almost surely, 2^{88245516631681} is an apocalyptic number.

It is an amenable number.

88245516631681 is a deficient number, since it is larger than the sum of its proper divisors (1393773011).

88245516631681 is a wasteful number, since it uses less digits than its factorization.

88245516631681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393773010.

The product of its digits is 66355200, while the sum is 64.

The spelling of 88245516631681 in words is "eighty-eight trillion, two hundred forty-five billion, five hundred sixteen million, six hundred thirty-one thousand, six hundred eighty-one".