87616854621 has 48 divisors (see below), whose sum is σ = 131557920000. Its totient is φ = 56123819136.

The previous prime is 87616854617. The next prime is 87616854631. The reversal of 87616854621 is 12645861678.

87616854621 is a `hidden beast` number, since 8 + 7 + 6 + 1 + 6 + 8 + 5 + 4 + 621 = 666.

It is not a de Polignac number, because 87616854621 - 2² = 87616854617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87616854631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60299931 + ... + 60301383.

It is an arithmetic number, because the mean of its divisors is an integer number (2740790000).

Almost surely, 2^87616854621 is an apocalyptic number.

It is an amenable number.

87616854621 is a deficient number, since it is larger than the sum of its proper divisors (43941065379).

87616854621 is a wasteful number, since it uses less digits than its factorization.

87616854621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450 (or 2447 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 87616854621 in words is "eighty-seven billion, six hundred sixteen million, eight hundred fifty-four thousand, six hundred twenty-one".