51992155506 has 8 divisors (see below), whose sum is σ = 103984311024. Its totient is φ = 17330718500.

The previous prime is 51992155493. The next prime is 51992155511. The reversal of 51992155506 is 60555129915.

It is a sphenic number, since it is the product of 3 distinct primes.

51992155506 is an admirable number.

It is a super-2 number, since 2×51992155506² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4332679620 + ... + 4332679631.

It is an arithmetic number, because the mean of its divisors is an integer number (12998038878).

Almost surely, 2^51992155506 is an apocalyptic number.

51992155506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51992155506 is a wasteful number, since it uses less digits than its factorization.

51992155506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8665359256.

The product of its (nonzero) digits is 607500, while the sum is 48.

The spelling of 51992155506 in words is "fifty-one billion, nine hundred ninety-two million, one hundred fifty-five thousand, five hundred six".