551336515621 has 16 divisors (see below), whose sum is σ = 572020992000. Its totient is φ = 530836493040.

The previous prime is 551336515607. The next prime is 551336515643. The reversal of 551336515621 is 126515633155.

It is not a de Polignac number, because 551336515621 - 2⁷ = 551336515493 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 (551336515721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10522330 + ... + 10574596.

It is an arithmetic number, because the mean of its divisors is an integer number (35751312000).

Almost surely, 2^551336515621 is an apocalyptic number.

It is an amenable number.

551336515621 is a deficient number, since it is larger than the sum of its proper divisors (20684476379).

551336515621 is a wasteful number, since it uses less digits than its factorization.

551336515621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54024.

The product of its digits is 405000, while the sum is 43.

The spelling of 551336515621 in words is "five hundred fifty-one billion, three hundred thirty-six million, five hundred fifteen thousand, six hundred twenty-one".