716166661617 has 32 divisors (see below), whose sum is σ = 1174716341760. Its totient is φ = 427562174160.

The previous prime is 716166661607. The next prime is 716166661621.

716166661617 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 716166661617 - 2¹⁶ = 716166596081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (716166661607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17975143 + ... + 18014940.

It is an arithmetic number, because the mean of its divisors is an integer number (36709885680).

Almost surely, 2^716166661617 is an apocalyptic number.

It is an amenable number.

716166661617 is a deficient number, since it is larger than the sum of its proper divisors (458549680143).

716166661617 is a wasteful number, since it uses less digits than its factorization.

716166661617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35990170 (or 35990164 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The spelling of 716166661617 in words is "seven hundred sixteen billion, one hundred sixty-six million, six hundred sixty-one thousand, six hundred seventeen".