549297714649 has 4 divisors (see below), whose sum is σ = 549508256820. Its totient is φ = 549087172480.

The previous prime is 549297714583. The next prime is 549297714673. The reversal of 549297714649 is 946417792945.

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

It can be written as a sum of positive squares in 2 ways, for example, as 189486090000 + 359811624649 = 435300^2 + 599843^2 .

It is a cyclic number.

It is not a de Polignac number, because 549297714649 - 2²³ = 549289326041 is a prime.

It is a super-2 number, since 2×549297714649² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549297714349) 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, 105267172 + ... + 105272389.

It is an arithmetic number, because the mean of its divisors is an integer number (137377064205).

Almost surely, 2^549297714649 is an apocalyptic number.

It is an amenable number.

549297714649 is a deficient number, since it is larger than the sum of its proper divisors (210542171).

549297714649 is a wasteful number, since it uses less digits than its factorization.

549297714649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210542170.

The product of its digits is 137168640, while the sum is 67.

The spelling of 549297714649 in words is "five hundred forty-nine billion, two hundred ninety-seven million, seven hundred fourteen thousand, six hundred forty-nine".