51263458512 has 80 divisors (see below), whose sum is σ = 156231524352. Its totient is φ = 14174225280.

The previous prime is 51263458489. The next prime is 51263458513. The reversal of 51263458512 is 21585436215.

It is a super-2 number, since 2×51263458512² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51263458513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2450388 + ... + 2471219.

Almost surely, 2^51263458512 is an apocalyptic number.

It is an amenable number.

51263458512 is an abundant number, since it is smaller than the sum of its proper divisors (104968065840).

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

51263458512 is a wasteful number, since it uses less digits than its factorization.

51263458512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921656 (or 4921650 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The spelling of 51263458512 in words is "fifty-one billion, two hundred sixty-three million, four hundred fifty-eight thousand, five hundred twelve".