88797779781 has 4 divisors (see below), whose sum is σ = 118397039712. Its totient is φ = 59198519852.

The previous prime is 88797779737. The next prime is 88797779831. The reversal of 88797779781 is 18797779788.

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 88797779781 - 2¹³ = 88797771589 is a prime.

It is a super-2 number, since 2×88797779781² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 88797779697 and 88797779706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88797779711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14799629961 + ... + 14799629966.

It is an arithmetic number, because the mean of its divisors is an integer number (29599259928).

Almost surely, 2^88797779781 is an apocalyptic number.

It is an amenable number.

88797779781 is a deficient number, since it is larger than the sum of its proper divisors (29599259931).

88797779781 is a wasteful number, since it uses less digits than its factorization.

88797779781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29599259930.

The product of its digits is 697019904, while the sum is 78.

The spelling of 88797779781 in words is "eighty-eight billion, seven hundred ninety-seven million, seven hundred seventy-nine thousand, seven hundred eighty-one".