87770707152621 has 4 divisors (see below), whose sum is σ = 117027609536832. Its totient is φ = 58513804768412.

The previous prime is 87770707152613. The next prime is 87770707152641. The reversal of 87770707152621 is 12625170707778.

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 87770707152621 - 2³ = 87770707152613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87770707152641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14628451192101 + ... + 14628451192106.

It is an arithmetic number, because the mean of its divisors is an integer number (29256902384208).

Almost surely, 2^{87770707152621} is an apocalyptic number.

It is an amenable number.

87770707152621 is a deficient number, since it is larger than the sum of its proper divisors (29256902384211).

87770707152621 is a wasteful number, since it uses less digits than its factorization.

87770707152621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29256902384210.

The product of its (nonzero) digits is 16134720, while the sum is 60.

The spelling of 87770707152621 in words is "eighty-seven trillion, seven hundred seventy billion, seven hundred seven million, one hundred fifty-two thousand, six hundred twenty-one".