88055031781 has 4 divisors (see below), whose sum is σ = 88055948992. Its totient is φ = 88054114572.

The previous prime is 88055031773. The next prime is 88055031793. The reversal of 88055031781 is 18713055088.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 88055031781 - 2³ = 88055031773 is a prime.

It is a super-2 number, since 2×88055031781² (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 (88055031761) 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, 295191 + ... + 513076.

It is an arithmetic number, because the mean of its divisors is an integer number (22013987248).

Almost surely, 2^88055031781 is an apocalyptic number.

It is an amenable number.

88055031781 is a deficient number, since it is larger than the sum of its proper divisors (917211).

88055031781 is a wasteful number, since it uses less digits than its factorization.

88055031781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917210.

The product of its (nonzero) digits is 268800, while the sum is 46.

The spelling of 88055031781 in words is "eighty-eight billion, fifty-five million, thirty-one thousand, seven hundred eighty-one".