51110561712 has 160 divisors (see below), whose sum is σ = 154678988800. Its totient is φ = 14536488960.

The previous prime is 51110561699. The next prime is 51110561731. The reversal of 51110561712 is 21716501115.

It is a super-2 number, since 2×51110561712² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51110561712.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3664512 + ... + 3678432.

It is an arithmetic number, because the mean of its divisors is an integer number (966743680).

Almost surely, 2^51110561712 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 51110561712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77339494400).

51110561712 is an abundant number, since it is smaller than the sum of its proper divisors (103568427088).

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

51110561712 is a wasteful number, since it uses less digits than its factorization.

51110561712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14176 (or 14156 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 30.

The spelling of 51110561712 in words is "fifty-one billion, one hundred ten million, five hundred sixty-one thousand, seven hundred twelve".