968396877491 has 4 divisors (see below), whose sum is σ = 969966403032. Its totient is φ = 966827351952.

The previous prime is 968396877479. The next prime is 968396877493. The reversal of 968396877491 is 194778693869.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-968396877491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (968396877493) 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, 784761845 + ... + 784763078.

It is an arithmetic number, because the mean of its divisors is an integer number (242491600758).

Almost surely, 2^968396877491 is an apocalyptic number.

968396877491 is a deficient number, since it is larger than the sum of its proper divisors (1569525541).

968396877491 is a wasteful number, since it uses less digits than its factorization.

968396877491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569525540.

The product of its digits is 987614208, while the sum is 77.

The spelling of 968396877491 in words is "nine hundred sixty-eight billion, three hundred ninety-six million, eight hundred seventy-seven thousand, four hundred ninety-one".