51002142125 has 16 divisors (see below), whose sum is σ = 69437100096. Its totient is φ = 37092466000.

The previous prime is 51002142109. The next prime is 51002142241. The reversal of 51002142125 is 52124120015.

It is not a de Polignac number, because 51002142125 - 2⁴ = 51002142109 is a prime.

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 51002142125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18544859 + ... + 18547608.

It is an arithmetic number, because the mean of its divisors is an integer number (4339818756).

Almost surely, 2^51002142125 is an apocalyptic number.

51002142125 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51002142125 is a deficient number, since it is larger than the sum of its proper divisors (18434957971).

51002142125 is a wasteful number, since it uses less digits than its factorization.

51002142125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37092493 (or 37092483 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The spelling of 51002142125 in words is "fifty-one billion, two million, one hundred forty-two thousand, one hundred twenty-five".