549469616164 has 18 divisors (see below), whose sum is σ = 1118563147590. Its totient is φ = 235486978272.

The previous prime is 549469616161. The next prime is 549469616167. The reversal of 549469616164 is 461616964945.

It is an interprime number because it is at equal distance from previous prime (549469616161) and next prime (549469616167).

It can be written as a sum of positive squares in only one way, i.e., 501771056164 + 47698560000 = 708358^2 + 218400^2 .

It is not an unprimeable number, because it can be changed into a prime (549469616161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1401708009 + ... + 1401708400.

Almost surely, 2^549469616164 is an apocalyptic number.

It is an amenable number.

549469616164 is an abundant number, since it is smaller than the sum of its proper divisors (569093531426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549469616164 is a wasteful number, since it uses less digits than its factorization.

549469616164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803416427 (or 2803416418 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 61.

The spelling of 549469616164 in words is "five hundred forty-nine billion, four hundred sixty-nine million, six hundred sixteen thousand, one hundred sixty-four".