51466387392 has 448 divisors, whose sum is σ = 176754739200. Its totient is φ = 14382489600.

The previous prime is 51466387363. The next prime is 51466387397. The reversal of 51466387392 is 29378366415.

51466387392 is a `hidden beast` number, since 514 + 6 + 6 + 38 + 7 + 3 + 92 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51466387397) 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, 125834484 + ... + 125834892.

Almost surely, 2^51466387392 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 51466387392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88377369600).

51466387392 is an abundant number, since it is smaller than the sum of its proper divisors (125288351808).

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

51466387392 is a wasteful number, since it uses less digits than its factorization.

51466387392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 625 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 51466387392 in words is "fifty-one billion, four hundred sixty-six million, three hundred eighty-seven thousand, three hundred ninety-two".