51488073944 has 32 divisors (see below), whose sum is σ = 102232199520. Its totient is φ = 24226546176.

The previous prime is 51488073937. The next prime is 51488073947. The reversal of 51488073944 is 44937088415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51488073947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1287677 + ... + 1327059.

It is an arithmetic number, because the mean of its divisors is an integer number (3194756235).

Almost surely, 2^51488073944 is an apocalyptic number.

It is an amenable number.

51488073944 is a deficient number, since it is larger than the sum of its proper divisors (50744125576).

51488073944 is a wasteful number, since it uses less digits than its factorization.

51488073944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49019 (or 49015 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 51488073944 in words is "fifty-one billion, four hundred eighty-eight million, seventy-three thousand, nine hundred forty-four".