656112207516751 has 4 divisors (see below), whose sum is σ = 656877799358352. Its totient is φ = 655346615675152.

The previous prime is 656112207516713. The next prime is 656112207516767. The reversal of 656112207516751 is 157615702211656.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 656112207516751 - 2²⁵ = 656112173962319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 656112207516692 and 656112207516701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656112207516251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382795919515 + ... + 382795921228.

It is an arithmetic number, because the mean of its divisors is an integer number (164219449839588).

Almost surely, 2^{656112207516751} is an apocalyptic number.

656112207516751 is a deficient number, since it is larger than the sum of its proper divisors (765591841601).

656112207516751 is an equidigital number, since it uses as much as digits as its factorization.

656112207516751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765591841600.

The product of its (nonzero) digits is 5292000, while the sum is 55.

The spelling of 656112207516751 in words is "six hundred fifty-six trillion, one hundred twelve billion, two hundred seven million, five hundred sixteen thousand, seven hundred fifty-one".