861614788961 has 8 divisors (see below), whose sum is σ = 866819299200. Its totient is φ = 856423607760.

The previous prime is 861614788927. The next prime is 861614788967. The reversal of 861614788961 is 169887416168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-861614788961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861614788967) 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, 3202571 + ... + 3461168.

It is an arithmetic number, because the mean of its divisors is an integer number (108352412400).

Almost surely, 2^861614788961 is an apocalyptic number.

It is an amenable number.

861614788961 is a deficient number, since it is larger than the sum of its proper divisors (5204510239).

861614788961 is a wasteful number, since it uses less digits than its factorization.

861614788961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6664519.

The product of its digits is 27869184, while the sum is 65.

The spelling of 861614788961 in words is "eight hundred sixty-one billion, six hundred fourteen million, seven hundred eighty-eight thousand, nine hundred sixty-one".