551131515442 has 8 divisors (see below), whose sum is σ = 853364927232. Its totient is φ = 266676539700.

The previous prime is 551131515437. The next prime is 551131515457. The reversal of 551131515442 is 244515131155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4444608934 + ... + 4444609057.

It is an arithmetic number, because the mean of its divisors is an integer number (106670615904).

Almost surely, 2^551131515442 is an apocalyptic number.

551131515442 is a deficient number, since it is larger than the sum of its proper divisors (302233411790).

551131515442 is a wasteful number, since it uses less digits than its factorization.

551131515442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8889218024.

The product of its digits is 60000, while the sum is 37.

Adding to 551131515442 its reverse (244515131155), we get a palindrome (795646646597).

The spelling of 551131515442 in words is "five hundred fifty-one billion, one hundred thirty-one million, five hundred fifteen thousand, four hundred forty-two".