51423493185792 has 2592 divisors, whose sum is σ = 200942410152960. Its totient is φ = 12912350330880.

The previous prime is 51423493185791. The next prime is 51423493185851. The reversal of 51423493185792 is 29758139432415.

51423493185792 is a `hidden beast` number, since 5 + 1 + 4 + 2 + 3 + 49 + 3 + 18 + 579 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (51423493185791) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 129530209338 + ... + 129530209734.

Almost surely, 2^{51423493185792} is an apocalyptic number.

51423493185792 is a gapful number since it is divisible by the number (52) 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 51423493185792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100471205076480).

51423493185792 is an abundant number, since it is smaller than the sum of its proper divisors (149518916967168).

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

51423493185792 is a wasteful number, since it uses less digits than its factorization.

51423493185792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 526 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The spelling of 51423493185792 in words is "fifty-one trillion, four hundred twenty-three billion, four hundred ninety-three million, one hundred eighty-five thousand, seven hundred ninety-two".