551402380636 has 24 divisors (see below), whose sum is σ = 967369256784. Its totient is φ = 275012008320.

The previous prime is 551402380609. The next prime is 551402380649. The reversal of 551402380636 is 636083204155.

It is a junction number, because it is equal to n+sod(n) for n = 551402380592 and 551402380601.

It is a congruent number.

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, 2529426 + ... + 2738758.

It is an arithmetic number, because the mean of its divisors is an integer number (40307052366).

Almost surely, 2^551402380636 is an apocalyptic number.

It is an amenable number.

551402380636 is a deficient number, since it is larger than the sum of its proper divisors (415966876148).

551402380636 is a wasteful number, since it uses less digits than its factorization.

551402380636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210981 (or 210979 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 551402380636 in words is "five hundred fifty-one billion, four hundred two million, three hundred eighty thousand, six hundred thirty-six".