51156017717244 has 24 divisors (see below), whose sum is σ = 130215317826048. Its totient is φ = 15501823550640.

The previous prime is 51156017717149. The next prime is 51156017717251. The reversal of 51156017717244 is 44271771065115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193772794252 + ... + 193772794515.

It is an arithmetic number, because the mean of its divisors is an integer number (5425638242752).

Almost surely, 2^{51156017717244} is an apocalyptic number.

It is an amenable number.

51156017717244 is an abundant number, since it is smaller than the sum of its proper divisors (79059300108804).

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

51156017717244 is a wasteful number, since it uses less digits than its factorization.

51156017717244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387545588785 (or 387545588783 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 51.

The spelling of 51156017717244 in words is "fifty-one trillion, one hundred fifty-six billion, seventeen million, seven hundred seventeen thousand, two hundred forty-four".