88260920661 has 4 divisors (see below), whose sum is σ = 117681227552.
Its totient is φ = 58840613772.
The previous prime is 88260920639. The next prime is 88260920707. The reversal of 88260920661 is 16602906288.
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.
It is not a de Polignac number, because 88260920661 - 222 = 88256726357 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 88260920661.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (88260920861) 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, 14710153441 + ... + 14710153446.
It is an arithmetic number, because the mean of its divisors is an integer number (29420306888).
Almost surely, 288260920661 is an apocalyptic number.
It is an amenable number.
88260920661 is a deficient number, since it is larger than the sum of its proper divisors (29420306891).
88260920661 is a wasteful number, since it uses less digits than its factorization.
88260920661 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 29420306890.
The product of its (nonzero) digits is 497664, while the sum is 48.
The spelling of 88260920661 in words is "eighty-eight billion, two hundred sixty million, nine hundred twenty thousand, six hundred sixty-one".