551646801982 has 16 divisors (see below), whose sum is σ = 835562643552. Its totient is φ = 273126297600.

The previous prime is 551646801973. The next prime is 551646801991. The reversal of 551646801982 is 289108646155.

It is an interprime number because it is at equal distance from previous prime (551646801973) and next prime (551646801991).

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, 3105982 + ... + 3278782.

It is an arithmetic number, because the mean of its divisors is an integer number (52222665222).

Almost surely, 2^551646801982 is an apocalyptic number.

551646801982 is a deficient number, since it is larger than the sum of its proper divisors (283915841570).

551646801982 is a wasteful number, since it uses less digits than its factorization.

551646801982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188403.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 551646801982 in words is "five hundred fifty-one billion, six hundred forty-six million, eight hundred one thousand, nine hundred eighty-two".