551612216155 has 32 divisors (see below), whose sum is σ = 888751438848. Its totient is φ = 317411222400.

The previous prime is 551612216147. The next prime is 551612216321.

551612216155 is nontrivially palindromic in base 10.

551612216155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 551612216155 - 2³ = 551612216147 is a prime.

It is a super-2 number, since 2×551612216155² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55101111 + ... + 55111120.

It is an arithmetic number, because the mean of its divisors is an integer number (27773482464).

Almost surely, 2^551612216155 is an apocalyptic number.

551612216155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551612216155 is a deficient number, since it is larger than the sum of its proper divisors (337139222693).

551612216155 is a wasteful number, since it uses less digits than its factorization.

551612216155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110212267.

The product of its digits is 90000, while the sum is 40.

It can be divided in two parts, 551612 and 216155, that added together give a palindrome (767767).

The spelling of 551612216155 in words is "five hundred fifty-one billion, six hundred twelve million, two hundred sixteen thousand, one hundred fifty-five".