551213343242 has 16 divisors (see below), whose sum is σ = 849502321920. Its totient is φ = 268142218368.

The previous prime is 551213343209. The next prime is 551213343371. The reversal of 551213343242 is 242343312155.

It is a super-2 number, since 2×551213343242² (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 7 ways as a sum of consecutive naturals, for example, 24067418 + ... + 24090309.

It is an arithmetic number, because the mean of its divisors is an integer number (53093895120).

Almost surely, 2^551213343242 is an apocalyptic number.

551213343242 is a deficient number, since it is larger than the sum of its proper divisors (298288978678).

551213343242 is a wasteful number, since it uses less digits than its factorization.

551213343242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48157885.

The product of its digits is 86400, while the sum is 35.

Adding to 551213343242 its reverse (242343312155), we get a palindrome (793556655397).

The spelling of 551213343242 in words is "five hundred fifty-one billion, two hundred thirteen million, three hundred forty-three thousand, two hundred forty-two".