549742313973 has 4 divisors (see below), whose sum is σ = 732989751968. Its totient is φ = 366494875980.

The previous prime is 549742313971. The next prime is 549742313999. The reversal of 549742313973 is 379313247945.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 549742313973 - 2¹ = 549742313971 is a prime.

It is a super-2 number, since 2×549742313973² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549742313971) 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, 91623718993 + ... + 91623718998.

It is an arithmetic number, because the mean of its divisors is an integer number (183247437992).

Almost surely, 2^549742313973 is an apocalyptic number.

It is an amenable number.

549742313973 is a deficient number, since it is larger than the sum of its proper divisors (183247437995).

549742313973 is a wasteful number, since it uses less digits than its factorization.

549742313973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183247437994.

The product of its digits is 17146080, while the sum is 57.

The spelling of 549742313973 in words is "five hundred forty-nine billion, seven hundred forty-two million, three hundred thirteen thousand, nine hundred seventy-three".