51015712450 has 12 divisors (see below), whose sum is σ = 94889225250. Its totient is φ = 20406284960.

The previous prime is 51015712411. The next prime is 51015712469. The reversal of 51015712450 is 5421751015.

It can be written as a sum of positive squares in 3 ways, for example, as 38174516689 + 12841195761 = 195383^2 + 113319^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510157075 + ... + 510157174.

Almost surely, 2^51015712450 is an apocalyptic number.

51015712450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51015712450 is a deficient number, since it is larger than the sum of its proper divisors (43873512800).

51015712450 is a wasteful number, since it uses less digits than its factorization.

51015712450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020314261 (or 1020314256 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 31.

The spelling of 51015712450 in words is "fifty-one billion, fifteen million, seven hundred twelve thousand, four hundred fifty".