51761162496 has 144 divisors (see below), whose sum is σ = 139413718080. Its totient is φ = 17047879680.

The previous prime is 51761162477. The next prime is 51761162507. The reversal of 51761162496 is 69426116715.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24872176 + ... + 24874256.

It is an arithmetic number, because the mean of its divisors is an integer number (968150820).

Almost surely, 2^51761162496 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 51761162496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69706859040).

51761162496 is an abundant number, since it is smaller than the sum of its proper divisors (87652555584).

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

51761162496 is a wasteful number, since it uses less digits than its factorization.

51761162496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472 (or 2458 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The spelling of 51761162496 in words is "fifty-one billion, seven hundred sixty-one million, one hundred sixty-two thousand, four hundred ninety-six".