61747474716 has 96 divisors (see below), whose sum is σ = 166494720000. Its totient is φ = 19772610624.

The previous prime is 61747474709. The next prime is 61747474751.

61747474716 is a `hidden beast` number, since 61 + 7 + 47 + 474 + 71 + 6 = 666.

61747474716 is nontrivially palindromic in base 10.

61747474716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217885 + ... + 413483.

It is an arithmetic number, because the mean of its divisors is an integer number (1734320000).

Almost surely, 2^61747474716 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 61747474716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83247360000).

61747474716 is an abundant number, since it is smaller than the sum of its proper divisors (104747245284).

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

61747474716 is a wasteful number, since it uses less digits than its factorization.

61747474716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195728 (or 195720 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 54.

The spelling of 61747474716 in words is "sixty-one billion, seven hundred forty-seven million, four hundred seventy-four thousand, seven hundred sixteen".