376255407978666 has 24 divisors (see below), whose sum is σ = 815417011412640. Its totient is φ = 125388167665896.

The previous prime is 376255407978649. The next prime is 376255407978679. The reversal of 376255407978666 is 666879704552673.

It is a super-2 number, since 2×376255407978666² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2525061790 + ... + 2525210793.

It is an arithmetic number, because the mean of its divisors is an integer number (33975708808860).

Almost surely, 2^{376255407978666} is an apocalyptic number.

376255407978666 is an abundant number, since it is smaller than the sum of its proper divisors (439161603433974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

376255407978666 is a wasteful number, since it uses less digits than its factorization.

376255407978666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050276730 (or 5050276727 counting only the distinct ones).

The product of its (nonzero) digits is 19203609600, while the sum is 81.

The spelling of 376255407978666 in words is "three hundred seventy-six trillion, two hundred fifty-five billion, four hundred seven million, nine hundred seventy-eight thousand, six hundred sixty-six".