551211533345 has 32 divisors (see below), whose sum is σ = 733541550336. Its totient is φ = 394241414400.

The previous prime is 551211533329. The next prime is 551211533357. The reversal of 551211533345 is 543335112155.

It is not a de Polignac number, because 551211533345 - 2⁴ = 551211533329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551211533299 and 551211533308.

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, 27390227 + ... + 27410343.

It is an arithmetic number, because the mean of its divisors is an integer number (22923173448).

Almost surely, 2^551211533345 is an apocalyptic number.

551211533345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551211533345 is a deficient number, since it is larger than the sum of its proper divisors (182330016991).

551211533345 is a wasteful number, since it uses less digits than its factorization.

551211533345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28361.

The product of its digits is 135000, while the sum is 38.

The spelling of 551211533345 in words is "five hundred fifty-one billion, two hundred eleven million, five hundred thirty-three thousand, three hundred forty-five".