61471004736 has 112 divisors (see below), whose sum is σ = 165489981440. Its totient is φ = 20134033920.

The previous prime is 61471004689. The next prime is 61471004753. The reversal of 61471004736 is 63740017416.

It is a junction number, because it is equal to n+sod(n) for n = 61471004694 and 61471004703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3190845 + ... + 3210051.

It is an arithmetic number, because the mean of its divisors is an integer number (1477589120).

Almost surely, 2^61471004736 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 61471004736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82744990720).

61471004736 is an abundant number, since it is smaller than the sum of its proper divisors (104018976704).

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

61471004736 is a wasteful number, since it uses less digits than its factorization.

61471004736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19512 (or 19502 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 61471004736 in words is "sixty-one billion, four hundred seventy-one million, four thousand, seven hundred thirty-six".