61751660432716 has 24 divisors (see below), whose sum is σ = 108813395640320. Its totient is φ = 30662415030672.

The previous prime is 61751660432681. The next prime is 61751660432717. The reversal of 61751660432716 is 61723406615716.

It is not an unprimeable number, because it can be changed into a prime (61751660432717) 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, 36191556 + ... + 37859371.

Almost surely, 2^{61751660432716} is an apocalyptic number.

It is an amenable number.

61751660432716 is a deficient number, since it is larger than the sum of its proper divisors (47061735207604).

61751660432716 is a wasteful number, since it uses less digits than its factorization.

61751660432716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74052373 (or 74052371 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 61751660432716 in words is "sixty-one trillion, seven hundred fifty-one billion, six hundred sixty million, four hundred thirty-two thousand, seven hundred sixteen".