51447120015 has 48 divisors (see below), whose sum is σ = 87509197440. Its totient is φ = 25800413760.

The previous prime is 51447120001. The next prime is 51447120041. The reversal of 51447120015 is 51002174415.

It is not a de Polignac number, because 51447120015 - 2³⁰ = 50373378191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 413220 + ... + 523110.

It is an arithmetic number, because the mean of its divisors is an integer number (1823108280).

Almost surely, 2^51447120015 is an apocalyptic number.

51447120015 is a deficient number, since it is larger than the sum of its proper divisors (36062077425).

51447120015 is a wasteful number, since it uses less digits than its factorization.

51447120015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110004 (or 109981 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The spelling of 51447120015 in words is "fifty-one billion, four hundred forty-seven million, one hundred twenty thousand, fifteen".