551191623353279 has 4 divisors (see below), whose sum is σ = 575156476542576. Its totient is φ = 527226770163984.

The previous prime is 551191623353219. The next prime is 551191623353291. The reversal of 551191623353279 is 972353326191155.

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

It is not a de Polignac number, because 551191623353279 - 2⁸ = 551191623353023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551191623353219) 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, 11982426594614 + ... + 11982426594659.

It is an arithmetic number, because the mean of its divisors is an integer number (143789119135644).

Almost surely, 2^{551191623353279} is an apocalyptic number.

551191623353279 is a deficient number, since it is larger than the sum of its proper divisors (23964853189297).

551191623353279 is a wasteful number, since it uses less digits than its factorization.

551191623353279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23964853189296.

The product of its digits is 45927000, while the sum is 62.

The spelling of 551191623353279 in words is "five hundred fifty-one trillion, one hundred ninety-one billion, six hundred twenty-three million, three hundred fifty-three thousand, two hundred seventy-nine".