551812682283855 has 64 divisors (see below), whose sum is σ = 910503417600000. Its totient is φ = 285253456620672.

The previous prime is 551812682283851. The next prime is 551812682283913. The reversal of 551812682283855 is 558382286218155.

It is not a de Polignac number, because 551812682283855 - 2² = 551812682283851 is a prime.

It is a super-2 number, since 2×551812682283855² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 551812682283855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551812682283851) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29126736 + ... + 44181354.

It is an arithmetic number, because the mean of its divisors is an integer number (14226615900000).

Almost surely, 2^{551812682283855} is an apocalyptic number.

551812682283855 is a deficient number, since it is larger than the sum of its proper divisors (358690735316145).

551812682283855 is a wasteful number, since it uses less digits than its factorization.

551812682283855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15055268.

The product of its digits is 368640000, while the sum is 69.

The spelling of 551812682283855 in words is "five hundred fifty-one trillion, eight hundred twelve billion, six hundred eighty-two million, two hundred eighty-three thousand, eight hundred fifty-five".