51250415242 has 16 divisors (see below), whose sum is σ = 85643931240. Its totient is φ = 22838380992.

The previous prime is 51250415233. The next prime is 51250415269. The reversal of 51250415242 is 24251405215.

It can be written as a sum of positive squares in 4 ways, for example, as 41286582481 + 9963832761 = 203191^2 + 99819^2 .

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 7 ways as a sum of consecutive naturals, for example, 33984933 + ... + 33986440.

Almost surely, 2^51250415242 is an apocalyptic number.

51250415242 is a deficient number, since it is larger than the sum of its proper divisors (34393515998).

51250415242 is a wasteful number, since it uses less digits than its factorization.

51250415242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67971417.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 51250415242 in words is "fifty-one billion, two hundred fifty million, four hundred fifteen thousand, two hundred forty-two".