51890553792 has 1008 divisors, whose sum is σ = 199669456896. Its totient is φ = 12590899200.

The previous prime is 51890553779. The next prime is 51890553797. The reversal of 51890553792 is 29735509815.

51890553792 is a `hidden beast` number, since 5 + 1 + 89 + 0 + 553 + 7 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51890553797) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 710829468 + ... + 710829540.

Almost surely, 2^51890553792 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 51890553792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99834728448).

51890553792 is an abundant number, since it is smaller than the sum of its proper divisors (147778903104).

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

51890553792 is a wasteful number, since it uses less digits than its factorization.

51890553792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 54.

The spelling of 51890553792 in words is "fifty-one billion, eight hundred ninety million, five hundred fifty-three thousand, seven hundred ninety-two".