21577853328682 has 16 divisors (see below), whose sum is σ = 36990801567360. Its totient is φ = 9247602461328.

The previous prime is 21577853328599. The next prime is 21577853328761. The reversal of 21577853328682 is 28682335877512.

It is a super-2 number, since 2×21577853328682² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1275457 + ... + 6691972.

It is an arithmetic number, because the mean of its divisors is an integer number (2311925097960).

Almost surely, 2^{21577853328682} is an apocalyptic number.

21577853328682 is a deficient number, since it is larger than the sum of its proper divisors (15412948238678).

21577853328682 is a wasteful number, since it uses less digits than its factorization.

21577853328682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8160885.

The product of its digits is 270950400, while the sum is 67.

The spelling of 21577853328682 in words is "twenty-one trillion, five hundred seventy-seven billion, eight hundred fifty-three million, three hundred twenty-eight thousand, six hundred eighty-two".