551155223077 has 16 divisors (see below), whose sum is σ = 560300791680. Its totient is φ = 542054633472.

The previous prime is 551155223071. The next prime is 551155223093. The reversal of 551155223077 is 770322551155.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551155223077 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 (551155223071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50085858 + ... + 50096860.

It is an arithmetic number, because the mean of its divisors is an integer number (35018799480).

Almost surely, 2^551155223077 is an apocalyptic number.

It is an amenable number.

551155223077 is a deficient number, since it is larger than the sum of its proper divisors (9145568603).

551155223077 is a wasteful number, since it uses less digits than its factorization.

551155223077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12972.

The product of its (nonzero) digits is 367500, while the sum is 43.

The spelling of 551155223077 in words is "five hundred fifty-one billion, one hundred fifty-five million, two hundred twenty-three thousand, seventy-seven".