51487880160 has 96 divisors (see below), whose sum is σ = 167418703872. Its totient is φ = 13287191040.

The previous prime is 51487880137. The next prime is 51487880167. The reversal of 51487880160 is 6108878415.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51487880167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1715224 + ... + 1744983.

It is an arithmetic number, because the mean of its divisors is an integer number (1743944832).

Almost surely, 2^51487880160 is an apocalyptic number.

It is an amenable number.

51487880160 is an abundant number, since it is smaller than the sum of its proper divisors (115930823712).

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

51487880160 is a wasteful number, since it uses less digits than its factorization.

51487880160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3460256 (or 3460248 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 48.

The spelling of 51487880160 in words is "fifty-one billion, four hundred eighty-seven million, eight hundred eighty thousand, one hundred sixty".