656516306613 has 8 divisors (see below), whose sum is σ = 875929838688. Its totient is φ = 437390156144.

The previous prime is 656516306591. The next prime is 656516306617. The reversal of 656516306613 is 316603615656.

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 656516306613 - 2⁵ = 656516306581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656516306617) 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, 71840070 + ... + 71849207.

It is an arithmetic number, because the mean of its divisors is an integer number (109491229836).

Almost surely, 2^656516306613 is an apocalyptic number.

It is an amenable number.

656516306613 is a deficient number, since it is larger than the sum of its proper divisors (219413532075).

656516306613 is a wasteful number, since it uses less digits than its factorization.

656516306613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143690803.

The product of its (nonzero) digits is 1749600, while the sum is 48.

The spelling of 656516306613 in words is "six hundred fifty-six billion, five hundred sixteen million, three hundred six thousand, six hundred thirteen".