51664100461320 has 32 divisors (see below), whose sum is σ = 154992301384320. Its totient is φ = 13777093456320.

The previous prime is 51664100461307. The next prime is 51664100461333. The reversal of 51664100461320 is 2316400146615.

It is an interprime number because it is at equal distance from previous prime (51664100461307) and next prime (51664100461333).

It is a super-2 number, since 2×51664100461320² (a number of 28 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, 215267085136 + ... + 215267085375.

It is an arithmetic number, because the mean of its divisors is an integer number (4843509418260).

Almost surely, 2^{51664100461320} is an apocalyptic number.

It is an amenable number.

51664100461320 is an abundant number, since it is smaller than the sum of its proper divisors (103328200923000).

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

51664100461320 is a wasteful number, since it uses less digits than its factorization.

51664100461320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430534170525 (or 430534170521 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 51664100461320 in words is "fifty-one trillion, six hundred sixty-four billion, one hundred million, four hundred sixty-one thousand, three hundred twenty".