51512547632 has 320 divisors, whose sum is σ = 133047484416. Its totient is φ = 18766218240.

The previous prime is 51512547617. The next prime is 51512547659. The reversal of 51512547632 is 23674521515.

It is a self number, because there is not a number n which added to its sum of digits gives 51512547632.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 119518457 + ... + 119518887.

Almost surely, 2^51512547632 is an apocalyptic number.

51512547632 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 51512547632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66523742208).

51512547632 is an abundant number, since it is smaller than the sum of its proper divisors (81534936784).

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

51512547632 is a wasteful number, since it uses less digits than its factorization.

51512547632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 602 counting only the distinct ones).

The product of its digits is 252000, while the sum is 41.

The spelling of 51512547632 in words is "fifty-one billion, five hundred twelve million, five hundred forty-seven thousand, six hundred thirty-two".