610665616242856 has 16 divisors (see below), whose sum is σ = 1144998393739200. Its totient is φ = 305332711245744.

The previous prime is 610665616242841. The next prime is 610665616242859. The reversal of 610665616242856 is 658242616566016.

It is a happy number.

It is a super-2 number, since 2×610665616242856² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (610665616242859) 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, 19549665 + ... + 40043983.

It is an arithmetic number, because the mean of its divisors is an integer number (71562399608700).

Almost surely, 2^{610665616242856} is an apocalyptic number.

It is an amenable number.

610665616242856 is a deficient number, since it is larger than the sum of its proper divisors (534332777496344).

610665616242856 is a wasteful number, since it uses less digits than its factorization.

610665616242856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24218928 (or 24218924 counting only the distinct ones).

The product of its (nonzero) digits is 149299200, while the sum is 64.

The spelling of 610665616242856 in words is "six hundred ten trillion, six hundred sixty-five billion, six hundred sixteen million, two hundred forty-two thousand, eight hundred fifty-six".