87776162021 has 8 divisors (see below), whose sum is σ = 87863820000. Its totient is φ = 87688545840.

The previous prime is 87776162009. The next prime is 87776162027. The reversal of 87776162021 is 12026167778.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87776162021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87776162027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5596931 + ... + 5612591.

It is an arithmetic number, because the mean of its divisors is an integer number (10982977500).

Almost surely, 2^87776162021 is an apocalyptic number.

It is an amenable number.

87776162021 is a deficient number, since it is larger than the sum of its proper divisors (87657979).

87776162021 is a wasteful number, since it uses less digits than its factorization.

87776162021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20899.

The product of its (nonzero) digits is 395136, while the sum is 47.

The spelling of 87776162021 in words is "eighty-seven billion, seven hundred seventy-six million, one hundred sixty-two thousand, twenty-one".