51313105432 has 16 divisors (see below), whose sum is σ = 100395206640. Its totient is φ = 24541050336.

The previous prime is 51313105427. The next prime is 51313105451. The reversal of 51313105432 is 23450131315.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51313105432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139437603 + ... + 139437970.

It is an arithmetic number, because the mean of its divisors is an integer number (6274700415).

Almost surely, 2^51313105432 is an apocalyptic number.

It is an amenable number.

51313105432 is a deficient number, since it is larger than the sum of its proper divisors (49082101208).

51313105432 is a wasteful number, since it uses less digits than its factorization.

51313105432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278875602 (or 278875598 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 51313105432 its reverse (23450131315), we get a palindrome (74763236747).

The spelling of 51313105432 in words is "fifty-one billion, three hundred thirteen million, one hundred five thousand, four hundred thirty-two".