61717313328 has 40 divisors (see below), whose sum is σ = 173930611776. Its totient is φ = 18702216000.

The previous prime is 61717313321. The next prime is 61717313341. The reversal of 61717313328 is 82331371716.

It is a self number, because there is not a number n which added to its sum of digits gives 61717313328.

It is not an unprimeable number, because it can be changed into a prime (61717313321) 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, 58443898 + ... + 58444953.

Almost surely, 2^61717313328 is an apocalyptic number.

It is an amenable number.

61717313328 is an abundant number, since it is smaller than the sum of its proper divisors (112213298448).

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

61717313328 is a wasteful number, since it uses less digits than its factorization.

61717313328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116888873 (or 116888867 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The spelling of 61717313328 in words is "sixty-one billion, seven hundred seventeen million, three hundred thirteen thousand, three hundred twenty-eight".