51172601440782 has 8 divisors (see below), whose sum is σ = 102345202881576. Its totient is φ = 17057533813592.

The previous prime is 51172601440769. The next prime is 51172601440819. The reversal of 51172601440782 is 28704410627115.

It is a sphenic number, since it is the product of 3 distinct primes.

51172601440782 is an admirable number.

It is a congruent number.

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, 4264383453393 + ... + 4264383453404.

It is an arithmetic number, because the mean of its divisors is an integer number (12793150360197).

Almost surely, 2^{51172601440782} is an apocalyptic number.

51172601440782 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51172601440782 is a wasteful number, since it uses less digits than its factorization.

51172601440782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8528766906802.

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 51172601440782 in words is "fifty-one trillion, one hundred seventy-two billion, six hundred one million, four hundred forty thousand, seven hundred eighty-two".