88316581781 has 4 divisors (see below), whose sum is σ = 88384155072. Its totient is φ = 88249008492.

The previous prime is 88316581757. The next prime is 88316581819. The reversal of 88316581781 is 18718561388.

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 88316581781 - 2¹⁰ = 88316580757 is a prime.

It is a super-2 number, since 2×88316581781² (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 (88316581081) 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, 33784685 + ... + 33787298.

It is an arithmetic number, because the mean of its divisors is an integer number (22096038768).

Almost surely, 2^88316581781 is an apocalyptic number.

It is an amenable number.

88316581781 is a deficient number, since it is larger than the sum of its proper divisors (67573291).

88316581781 is a wasteful number, since it uses less digits than its factorization.

88316581781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67573290.

The product of its digits is 2580480, while the sum is 56.

The spelling of 88316581781 in words is "eighty-eight billion, three hundred sixteen million, five hundred eighty-one thousand, seven hundred eighty-one".