8621875016640 has 140 divisors (see below), whose sum is σ = 30669526337736. Its totient is φ = 2299166664192.

The previous prime is 8621875016639. The next prime is 8621875016707. The reversal of 8621875016640 is 466105781268.

8621875016640 is a `hidden beast` number, since 8 + 62 + 18 + 7 + 501 + 6 + 64 + 0 = 666.

It is a super-2 number, since 2×8621875016640² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 166291114 + ... + 166342953.

Almost surely, 2^{8621875016640} is an apocalyptic number.

8621875016640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8621875016640 is an abundant number, since it is smaller than the sum of its proper divisors (22047651321096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8621875016640 is a wasteful number, since it uses less digits than its factorization.

8621875016640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332634096 (or 332634077 counting only the distinct ones).

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

The spelling of 8621875016640 in words is "eight trillion, six hundred twenty-one billion, eight hundred seventy-five million, sixteen thousand, six hundred forty".