51887360946 has 32 divisors (see below), whose sum is σ = 109409817600. Its totient is φ = 16359492240.

The previous prime is 51887360939. The next prime is 51887360963. The reversal of 51887360946 is 64906378815.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288726 + ... + 432593.

It is an arithmetic number, because the mean of its divisors is an integer number (3419056800).

Almost surely, 2^51887360946 is an apocalyptic number.

51887360946 is an abundant number, since it is smaller than the sum of its proper divisors (57522456654).

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

51887360946 is a wasteful number, since it uses less digits than its factorization.

51887360946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721974.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 51887360946 in words is "fifty-one billion, eight hundred eighty-seven million, three hundred sixty thousand, nine hundred forty-six".