551520638374 has 16 divisors (see below), whose sum is σ = 841576935312. Its totient is φ = 271021690368.

The previous prime is 551520638371. The next prime is 551520638411. The reversal of 551520638374 is 473836025155.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551520638371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6632779 + ... + 6715414.

It is an arithmetic number, because the mean of its divisors is an integer number (52598558457).

Almost surely, 2^551520638374 is an apocalyptic number.

551520638374 is a deficient number, since it is larger than the sum of its proper divisors (290056296938).

551520638374 is a wasteful number, since it uses less digits than its factorization.

551520638374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13348551.

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 551520638374 in words is "five hundred fifty-one billion, five hundred twenty million, six hundred thirty-eight thousand, three hundred seventy-four".