51567141636 has 72 divisors (see below), whose sum is σ = 133562292864. Its totient is φ = 16766568000.

The previous prime is 51567141589. The next prime is 51567141643. The reversal of 51567141636 is 63614176515.

51567141636 is a `hidden beast` number, since 5 + 1 + 5 + 6 + 7 + 1 + 4 + 1 + 636 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 51567141591 and 51567141600.

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, 1140370 + ... + 1184726.

Almost surely, 2^51567141636 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 51567141636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66781146432).

51567141636 is an abundant number, since it is smaller than the sum of its proper divisors (81995151228).

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

51567141636 is a wasteful number, since it uses less digits than its factorization.

51567141636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45161 (or 45156 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The spelling of 51567141636 in words is "fifty-one billion, five hundred sixty-seven million, one hundred forty-one thousand, six hundred thirty-six".