61264831404 has 144 divisors (see below), whose sum is σ = 179148892160. Its totient is φ = 15942942720.

The previous prime is 61264831393. The next prime is 61264831427. The reversal of 61264831404 is 40413846216.

61264831404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61264831404² (a number of 22 digits) contains 22 as substring.

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, 711852 + ... + 793260.

Almost surely, 2^61264831404 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 61264831404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89574446080).

61264831404 is an abundant number, since it is smaller than the sum of its proper divisors (117884060756).

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

61264831404 is a wasteful number, since it uses less digits than its factorization.

61264831404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81488 (or 81469 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 61264831404 in words is "sixty-one billion, two hundred sixty-four million, eight hundred thirty-one thousand, four hundred four".