51092856381 has 8 divisors (see below), whose sum is σ = 77855781184. Its totient is φ = 29195917920.

The previous prime is 51092856359. The next prime is 51092856391. The reversal of 51092856381 is 18365829015.

It is a happy number.

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

It is not a de Polignac number, because 51092856381 - 2¹⁰ = 51092855357 is a prime.

It is a super-2 number, since 2×51092856381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51092856381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51092856341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216496560 + ... + 1216496601.

It is an arithmetic number, because the mean of its divisors is an integer number (9731972648).

Almost surely, 2^51092856381 is an apocalyptic number.

It is an amenable number.

51092856381 is a deficient number, since it is larger than the sum of its proper divisors (26762924803).

51092856381 is a wasteful number, since it uses less digits than its factorization.

51092856381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432993171.

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 51092856381 in words is "fifty-one billion, ninety-two million, eight hundred fifty-six thousand, three hundred eighty-one".