656112115261 has 8 divisors (see below), whose sum is σ = 684785162880. Its totient is φ = 627451270512.

The previous prime is 656112115259. The next prime is 656112115273. The reversal of 656112115261 is 162511211656.

656112115261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 656112115261 - 2¹ = 656112115259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 656112115261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656112115231) 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, 2940750 + ... + 3155983.

It is an arithmetic number, because the mean of its divisors is an integer number (85598145360).

Almost surely, 2^656112115261 is an apocalyptic number.

It is an amenable number.

656112115261 is a deficient number, since it is larger than the sum of its proper divisors (28673047619).

656112115261 is a wasteful number, since it uses less digits than its factorization.

656112115261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101435.

The product of its digits is 21600, while the sum is 37.

The spelling of 656112115261 in words is "six hundred fifty-six billion, one hundred twelve million, one hundred fifteen thousand, two hundred sixty-one".