5616797681 has 4 divisors (see below), whose sum is σ = 6127415664. Its totient is φ = 5106179700.

The previous prime is 5616797677. The next prime is 5616797687. The reversal of 5616797681 is 1867976165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5616797681 - 2² = 5616797677 is a prime.

It is a super-2 number, since 2×5616797681² = 63096832378573955522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5616797687) 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, 255308975 + ... + 255308996.

It is an arithmetic number, because the mean of its divisors is an integer number (1531853916).

Almost surely, 2^5616797681 is an apocalyptic number.

It is an amenable number.

5616797681 is a deficient number, since it is larger than the sum of its proper divisors (510617983).

5616797681 is a wasteful number, since it uses less digits than its factorization.

5616797681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510617982.

The product of its digits is 3810240, while the sum is 56.

The square root of 5616797681 is about 74945.2979245529. The cubic root of 5616797681 is about 1777.5817939985.

The spelling of 5616797681 in words is "five billion, six hundred sixteen million, seven hundred ninety-seven thousand, six hundred eighty-one".