61676055621 has 24 divisors (see below), whose sum is σ = 90219804480. Its totient is φ = 40596177600.

The previous prime is 61676055557. The next prime is 61676055659. The reversal of 61676055621 is 12655067616.

61676055621 is a `hidden beast` number, since 6 + 1 + 6 + 76 + 0 + 556 + 21 = 666.

It is not a de Polignac number, because 61676055621 - 2⁶ = 61676055557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61676055691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 497776 + ... + 609206.

It is an arithmetic number, because the mean of its divisors is an integer number (3759158520).

Almost surely, 2^61676055621 is an apocalyptic number.

It is an amenable number.

61676055621 is a deficient number, since it is larger than the sum of its proper divisors (28543748859).

61676055621 is a wasteful number, since it uses less digits than its factorization.

61676055621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112217 (or 112214 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 61676055621 in words is "sixty-one billion, six hundred seventy-six million, fifty-five thousand, six hundred twenty-one".