61133627464 has 64 divisors (see below), whose sum is σ = 141663392640. Its totient is φ = 24084311040.

The previous prime is 61133627447. The next prime is 61133627537. The reversal of 61133627464 is 46472633116.

It is a self number, because there is not a number n which added to its sum of digits gives 61133627464.

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, 1227 + ... + 349669.

It is an arithmetic number, because the mean of its divisors is an integer number (2213490510).

Almost surely, 2^61133627464 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 61133627464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70831696320).

61133627464 is an abundant number, since it is smaller than the sum of its proper divisors (80529765176).

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

61133627464 is a wasteful number, since it uses less digits than its factorization.

61133627464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348710 (or 348706 counting only the distinct ones).

The product of its digits is 435456, while the sum is 43.

The spelling of 61133627464 in words is "sixty-one billion, one hundred thirty-three million, six hundred twenty-seven thousand, four hundred sixty-four".