51015011432 has 64 divisors (see below), whose sum is σ = 119422771200. Its totient is φ = 19848162240.

The previous prime is 51015011401. The next prime is 51015011447. The reversal of 51015011432 is 23411051015.

51015011432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51015011398 and 51015011407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385313 + ... + 500495.

It is an arithmetic number, because the mean of its divisors is an integer number (1865980800).

Almost surely, 2^51015011432 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 51015011432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59711385600).

51015011432 is an abundant number, since it is smaller than the sum of its proper divisors (68407759768).

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

51015011432 is a wasteful number, since it uses less digits than its factorization.

51015011432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115926 (or 115922 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 51015011432 its reverse (23411051015), we get a palindrome (74426062447).

The spelling of 51015011432 in words is "fifty-one billion, fifteen million, eleven thousand, four hundred thirty-two".