61680279364 has 12 divisors (see below), whose sum is σ = 117753260688. Its totient is φ = 28036490600.

The previous prime is 61680279341. The next prime is 61680279373. The reversal of 61680279364 is 46397208616.

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, 700912222 + ... + 700912309.

It is an arithmetic number, because the mean of its divisors is an integer number (9812771724).

Almost surely, 2^61680279364 is an apocalyptic number.

It is an amenable number.

61680279364 is a deficient number, since it is larger than the sum of its proper divisors (56072981324).

61680279364 is a wasteful number, since it uses less digits than its factorization.

61680279364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401824546 (or 1401824544 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 61680279364 in words is "sixty-one billion, six hundred eighty million, two hundred seventy-nine thousand, three hundred sixty-four".