61865754290680 has 32 divisors (see below), whose sum is σ = 139332698406000. Its totient is φ = 24722345938176.

The previous prime is 61865754290647. The next prime is 61865754290687. The reversal of 61865754290680 is 8609245756816.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61865754290687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748576230 + ... + 748658869.

Almost surely, 2^{61865754290680} is an apocalyptic number.

It is an amenable number.

61865754290680 is an abundant number, since it is smaller than the sum of its proper divisors (77466944115320).

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

61865754290680 is a wasteful number, since it uses less digits than its factorization.

61865754290680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497236143 (or 1497236139 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 67.

The spelling of 61865754290680 in words is "sixty-one trillion, eight hundred sixty-five billion, seven hundred fifty-four million, two hundred ninety thousand, six hundred eighty".