551957693449 has 4 divisors (see below), whose sum is σ = 554731350400. Its totient is φ = 549184036500.

The previous prime is 551957693393. The next prime is 551957693467. The reversal of 551957693449 is 944396759155.

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 a cyclic number.

It is not a de Polignac number, because 551957693449 - 2¹⁹ = 551957169161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551957693479) 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, 1386828177 + ... + 1386828574.

It is an arithmetic number, because the mean of its divisors is an integer number (138682837600).

Almost surely, 2^551957693449 is an apocalyptic number.

It is an amenable number.

551957693449 is a deficient number, since it is larger than the sum of its proper divisors (2773656951).

551957693449 is a wasteful number, since it uses less digits than its factorization.

551957693449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773656950.

The product of its digits is 183708000, while the sum is 67.

The spelling of 551957693449 in words is "five hundred fifty-one billion, nine hundred fifty-seven million, six hundred ninety-three thousand, four hundred forty-nine".