549638836945 has 8 divisors (see below), whose sum is σ = 719527204800. Its totient is φ = 399737335920.

The previous prime is 549638836927. The next prime is 549638836987.

549638836945 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 549638836945 - 2⁹ = 549638836433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4996716645 + ... + 4996716754.

It is an arithmetic number, because the mean of its divisors is an integer number (89940900600).

Almost surely, 2^549638836945 is an apocalyptic number.

549638836945 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

549638836945 is a deficient number, since it is larger than the sum of its proper divisors (169888367855).

549638836945 is a wasteful number, since it uses less digits than its factorization.

549638836945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9993433415.

The product of its digits is 671846400, while the sum is 70.

The spelling of 549638836945 in words is "five hundred forty-nine billion, six hundred thirty-eight million, eight hundred thirty-six thousand, nine hundred forty-five".