464636537825580 has 144 divisors (see below), whose sum is σ = 1420023914268960. Its totient is φ = 122969497780224.

The previous prime is 464636537825561. The next prime is 464636537825611. The reversal of 464636537825580 is 85528735636464.

464636537825580 is a `hidden beast` number, since 4 + 6 + 4 + 6 + 3 + 6 + 5 + 37 + 8 + 2 + 5 + 580 = 666.

It is a super-2 number, since 2×464636537825580² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 464636537825499 and 464636537825508.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69800172 + ... + 76166508.

Almost surely, 2^{464636537825580} 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 464636537825580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710011957134480).

464636537825580 is an abundant number, since it is smaller than the sum of its proper divisors (955387376443380).

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

464636537825580 is a wasteful number, since it uses less digits than its factorization.

464636537825580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6369408 (or 6369403 counting only the distinct ones).

The product of its (nonzero) digits is 3483648000, while the sum is 72.

The spelling of 464636537825580 in words is "four hundred sixty-four trillion, six hundred thirty-six billion, five hundred thirty-seven million, eight hundred twenty-five thousand, five hundred eighty".