61974372724 has 12 divisors (see below), whose sum is σ = 118314711648. Its totient is φ = 28170169400.

The previous prime is 61974372709. The next prime is 61974372737. The reversal of 61974372724 is 42727347916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704254192 + ... + 704254279.

It is an arithmetic number, because the mean of its divisors is an integer number (9859559304).

Almost surely, 2^61974372724 is an apocalyptic number.

It is an amenable number.

61974372724 is a deficient number, since it is larger than the sum of its proper divisors (56340338924).

61974372724 is a wasteful number, since it uses less digits than its factorization.

61974372724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408508486 (or 1408508484 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 52.

The spelling of 61974372724 in words is "sixty-one billion, nine hundred seventy-four million, three hundred seventy-two thousand, seven hundred twenty-four".