51031013152 has 96 divisors (see below), whose sum is σ = 117694080000. Its totient is φ = 21771316224.

The previous prime is 51031013141. The next prime is 51031013167. The reversal of 51031013152 is 25131013015.

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, 2437224 + ... + 2458072.

It is an arithmetic number, because the mean of its divisors is an integer number (1225980000).

Almost surely, 2^51031013152 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 51031013152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58847040000).

51031013152 is an abundant number, since it is smaller than the sum of its proper divisors (66663066848).

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

51031013152 is a wasteful number, since it uses less digits than its factorization.

51031013152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21103 (or 21081 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

Adding to 51031013152 its reverse (25131013015), we get a palindrome (76162026167).

The spelling of 51031013152 in words is "fifty-one billion, thirty-one million, thirteen thousand, one hundred fifty-two".