51125122506 has 16 divisors (see below), whose sum is σ = 102252649248. Its totient is φ = 17041306800.

The previous prime is 51125122493. The next prime is 51125122519. The reversal of 51125122506 is 60522152115.

It is an interprime number because it is at equal distance from previous prime (51125122493) and next prime (51125122519).

It is a super-2 number, since 2×51125122506² (a number of 22 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, 298021 + ... + 437111.

It is an arithmetic number, because the mean of its divisors is an integer number (6390790578).

Almost surely, 2^51125122506 is an apocalyptic number.

51125122506 is an abundant number, since it is smaller than the sum of its proper divisors (51127526742).

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

51125122506 is a wasteful number, since it uses less digits than its factorization.

51125122506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200357.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 51125122506 in words is "fifty-one billion, one hundred twenty-five million, one hundred twenty-two thousand, five hundred six".