51201518707250 has 64 divisors (see below), whose sum is σ = 97658357681664. Its totient is φ = 20096423424000.

The previous prime is 51201518707249. The next prime is 51201518707277. The reversal of 51201518707250 is 5270781510215.

It is a super-2 number, since 2×51201518707250² (a number of 28 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 31 ways as a sum of consecutive naturals, for example, 1642346 + ... + 10251845.

It is an arithmetic number, because the mean of its divisors is an integer number (1525911838776).

Almost surely, 2^{51201518707250} is an apocalyptic number.

51201518707250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51201518707250 is a deficient number, since it is larger than the sum of its proper divisors (46456838974414).

51201518707250 is a wasteful number, since it uses less digits than its factorization.

51201518707250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11894532 (or 11894522 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 44.

The spelling of 51201518707250 in words is "fifty-one trillion, two hundred one billion, five hundred eighteen million, seven hundred seven thousand, two hundred fifty".