551638632016 has 10 divisors (see below), whose sum is σ = 1068799849562. Its totient is φ = 275819316000.

The previous prime is 551638631977. The next prime is 551638632019. The reversal of 551638632016 is 610236836155.

It can be written as a sum of positive squares in only one way, i.e., 524604695616 + 27033936400 = 724296^2 + 164420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551638632019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17238707235 + ... + 17238707266.

Almost surely, 2^551638632016 is an apocalyptic number.

It is an amenable number.

551638632016 is a deficient number, since it is larger than the sum of its proper divisors (517161217546).

551638632016 is a wasteful number, since it uses less digits than its factorization.

551638632016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34477414509 (or 34477414503 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 551638632016 in words is "five hundred fifty-one billion, six hundred thirty-eight million, six hundred thirty-two thousand, sixteen".