2631006636666 has 32 divisors (see below), whose sum is σ = 5265890880768. Its totient is φ = 876356112960.

The previous prime is 2631006636659. The next prime is 2631006636691. The reversal of 2631006636666 is 6666366001362.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80474575 + ... + 80507261.

It is an arithmetic number, because the mean of its divisors is an integer number (164559090024).

Almost surely, 2^{2631006636666} is an apocalyptic number.

2631006636666 is an abundant number, since it is smaller than the sum of its proper divisors (2634884244102).

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

2631006636666 is a wasteful number, since it uses less digits than its factorization.

2631006636666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42166.

The product of its (nonzero) digits is 5038848, while the sum is 51.

The spelling of 2631006636666 in words is "two trillion, six hundred thirty-one billion, six million, six hundred thirty-six thousand, six hundred sixty-six".