51025510544 has 20 divisors (see below), whose sum is σ = 98866075440. Its totient is φ = 25511684640.

The previous prime is 51025510517. The next prime is 51025510579. The reversal of 51025510544 is 44501552015.

It is a self number, because there is not a number n which added to its sum of digits gives 51025510544.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444899 + ... + 547709.

It is an arithmetic number, because the mean of its divisors is an integer number (4943303772).

Almost surely, 2^51025510544 is an apocalyptic number.

It is an amenable number.

51025510544 is a deficient number, since it is larger than the sum of its proper divisors (47840564896).

51025510544 is a wasteful number, since it uses less digits than its factorization.

51025510544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133838 (or 133832 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 51025510544 in words is "fifty-one billion, twenty-five million, five hundred ten thousand, five hundred forty-four".