549672475491 has 32 divisors (see below), whose sum is σ = 875427148800. Its totient is φ = 339775132320.

The previous prime is 549672475481. The next prime is 549672475501. The reversal of 549672475491 is 194574276945.

549672475491 is a `hidden beast` number, since 5 + 4 + 9 + 6 + 72 + 4 + 75 + 491 = 666.

It is an interprime number because it is at equal distance from previous prime (549672475481) and next prime (549672475501).

It is not a de Polignac number, because 549672475491 - 2⁶ = 549672475427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (549672475441) 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, 11374680 + ... + 11422901.

It is an arithmetic number, because the mean of its divisors is an integer number (27357098400).

Almost surely, 2^549672475491 is an apocalyptic number.

549672475491 is a deficient number, since it is larger than the sum of its proper divisors (325754673309).

549672475491 is a wasteful number, since it uses less digits than its factorization.

549672475491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22797656 (or 22797650 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 549672475491 in words is "five hundred forty-nine billion, six hundred seventy-two million, four hundred seventy-five thousand, four hundred ninety-one".