551368863155 has 16 divisors (see below), whose sum is σ = 728938428768. Its totient is φ = 397025280000.

The previous prime is 551368863127. The next prime is 551368863161.

It is a happy number.

551368863155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 551368863155 - 2¹² = 551368859059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551368863155.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49622606 + ... + 49633715.

It is an arithmetic number, because the mean of its divisors is an integer number (45558651798).

Almost surely, 2^551368863155 is an apocalyptic number.

551368863155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551368863155 is a deficient number, since it is larger than the sum of its proper divisors (177569565613).

551368863155 is a wasteful number, since it uses less digits than its factorization.

551368863155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99256438.

The product of its digits is 12960000, while the sum is 56.

The spelling of 551368863155 in words is "five hundred fifty-one billion, three hundred sixty-eight million, eight hundred sixty-three thousand, one hundred fifty-five".