51899977730496 has 448 divisors, whose sum is σ = 166026060103680. Its totient is φ = 13997796433920.

The previous prime is 51899977730443. The next prime is 51899977730519. The reversal of 51899977730496 is 69403777999815.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (448).

It is a hoax number, since the sum of its digits (84) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (84).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 273095860 + ... + 273285836.

It is an arithmetic number, because the mean of its divisors is an integer number (370593884160).

Almost surely, 2^{51899977730496} is an apocalyptic number.

51899977730496 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51899977730496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83013030051840).

51899977730496 is an abundant number, since it is smaller than the sum of its proper divisors (114126082373184).

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

51899977730496 is a wasteful number, since it uses less digits than its factorization.

51899977730496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190192 (or 190182 counting only the distinct ones).

The product of its (nonzero) digits is 6481218240, while the sum is 84.

The spelling of 51899977730496 in words is "fifty-one trillion, eight hundred ninety-nine billion, nine hundred seventy-seven million, seven hundred thirty thousand, four hundred ninety-six".