88890755721 has 8 divisors (see below), whose sum is σ = 119386125024. Its totient is φ = 58827945120.

The previous prime is 88890755719. The next prime is 88890755747. The reversal of 88890755721 is 12755709888.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 88890755721 - 2¹ = 88890755719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88890755791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108139195 + ... + 108140016.

It is an arithmetic number, because the mean of its divisors is an integer number (14923265628).

Almost surely, 2^88890755721 is an apocalyptic number.

It is an amenable number.

88890755721 is a deficient number, since it is larger than the sum of its proper divisors (30495369303).

88890755721 is a wasteful number, since it uses less digits than its factorization.

88890755721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216279351.

The product of its (nonzero) digits is 11289600, while the sum is 60.

The spelling of 88890755721 in words is "eighty-eight billion, eight hundred ninety million, seven hundred fifty-five thousand, seven hundred twenty-one".