51553801080 has 256 divisors, whose sum is σ = 176837788800. Its totient is φ = 13520908800.

The previous prime is 51553801043. The next prime is 51553801081. The reversal of 51553801080 is 8010835515.

51553801080 is a `hidden beast` number, since 5 + 15 + 538 + 0 + 108 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51553801081) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5331450 + ... + 5341110.

Almost surely, 2^51553801080 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 51553801080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88418894400).

51553801080 is an abundant number, since it is smaller than the sum of its proper divisors (125283987720).

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

51553801080 is an equidigital number, since it uses as much as digits as its factorization.

51553801080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9754 (or 9732 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 36.

The spelling of 51553801080 in words is "fifty-one billion, five hundred fifty-three million, eight hundred one thousand, eighty".