82377164025621 has 32 divisors (see below), whose sum is σ = 122134843776000. Its totient is φ = 54875551961664.

The previous prime is 82377164025539. The next prime is 82377164025787. The reversal of 82377164025621 is 12652046177328.

82377164025621 is a `hidden beast` number, since 8 + 2 + 3 + 7 + 7 + 1 + 6 + 4 + 0 + 2 + 5 + 621 = 666.

It is not a de Polignac number, because 82377164025621 - 2⁹ = 82377164025109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82377164020621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232966471 + ... + 233319803.

It is an arithmetic number, because the mean of its divisors is an integer number (3816713868000).

Almost surely, 2^{82377164025621} is an apocalyptic number.

It is an amenable number.

82377164025621 is a deficient number, since it is larger than the sum of its proper divisors (39757679750379).

82377164025621 is a wasteful number, since it uses less digits than its factorization.

82377164025621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360010 (or 360004 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 82377164025621 in words is "eighty-two trillion, three hundred seventy-seven billion, one hundred sixty-four million, twenty-five thousand, six hundred twenty-one".