551972772847 has 2 divisors, whose sum is σ = 551972772848. Its totient is φ = 551972772846.

The previous prime is 551972772809. The next prime is 551972772851. The reversal of 551972772847 is 748277279155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551972772847 - 2²⁷ = 551838555119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551972272847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275986386423 + 275986386424.

It is an arithmetic number, because the mean of its divisors is an integer number (275986386424).

Almost surely, 2^551972772847 is an apocalyptic number.

551972772847 is a deficient number, since it is larger than the sum of its proper divisors (1).

551972772847 is an equidigital number, since it uses as much as digits as its factorization.

551972772847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69148800, while the sum is 64.

The spelling of 551972772847 in words is "five hundred fifty-one billion, nine hundred seventy-two million, seven hundred seventy-two thousand, eight hundred forty-seven".