51810234361632 has 144 divisors (see below), whose sum is σ = 149450168387520. Its totient is φ = 17023135827456.

The previous prime is 51810234361621. The next prime is 51810234361661. The reversal of 51810234361632 is 23616343201815.

51810234361632 is a `hidden beast` number, since 5 + 1 + 8 + 1 + 0 + 2 + 3 + 4 + 3 + 6 + 1 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8025258 + ... + 12962454.

It is an arithmetic number, because the mean of its divisors is an integer number (1037848391580).

Almost surely, 2^{51810234361632} 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 51810234361632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74725084193760).

51810234361632 is an abundant number, since it is smaller than the sum of its proper divisors (97639934025888).

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

51810234361632 is a wasteful number, since it uses less digits than its factorization.

51810234361632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4937735 (or 4937724 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 51810234361632 in words is "fifty-one trillion, eight hundred ten billion, two hundred thirty-four million, three hundred sixty-one thousand, six hundred thirty-two".