56466775491 has 8 divisors (see below), whose sum is σ = 86044610304. Its totient is φ = 32266728840.

The previous prime is 56466775471. The next prime is 56466775511. The reversal of 56466775491 is 19457766465.

It is an interprime number because it is at equal distance from previous prime (56466775471) and next prime (56466775511).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56466775491 - 2⁶ = 56466775427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56466775451) 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, 1344447015 + ... + 1344447056.

It is an arithmetic number, because the mean of its divisors is an integer number (10755576288).

Almost surely, 2^56466775491 is an apocalyptic number.

56466775491 is a deficient number, since it is larger than the sum of its proper divisors (29577834813).

56466775491 is a wasteful number, since it uses less digits than its factorization.

56466775491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688894081.

The product of its digits is 38102400, while the sum is 60.

The spelling of 56466775491 in words is "fifty-six billion, four hundred sixty-six million, seven hundred seventy-five thousand, four hundred ninety-one".