51493170960 has 1200 divisors, whose sum is σ = 237192354432. Its totient is φ = 10218700800.

The previous prime is 51493170941. The next prime is 51493170991. The reversal of 51493170960 is 6907139415.

51493170960 is a `hidden beast` number, since 5 + 1 + 493 + 1 + 70 + 96 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 80332240 + ... + 80332880.

Almost surely, 2^51493170960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51493170960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118596177216).

51493170960 is an abundant number, since it is smaller than the sum of its proper divisors (185699183472).

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

51493170960 is a wasteful number, since it uses less digits than its factorization.

51493170960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 51493170960 in words is "fifty-one billion, four hundred ninety-three million, one hundred seventy thousand, nine hundred sixty".