12007775826621 has 8 divisors (see below), whose sum is σ = 17789297520960. Its totient is φ = 8005183884396.

The previous prime is 12007775826611. The next prime is 12007775826661. The reversal of 12007775826621 is 12662857770021.

12007775826621 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 7 + 7 + 7 + 5 + 8 + 2 + 6 + 621 = 666.

It is not a de Polignac number, because 12007775826621 - 2¹³ = 12007775818429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12007775826611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222366218985 + ... + 222366219038.

It is an arithmetic number, because the mean of its divisors is an integer number (2223662190120).

Almost surely, 2^{12007775826621} is an apocalyptic number.

It is an amenable number.

12007775826621 is a deficient number, since it is larger than the sum of its proper divisors (5781521694339).

12007775826621 is an equidigital number, since it uses as much as digits as its factorization.

12007775826621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444732438032 (or 444732438026 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 12007775826621 in words is "twelve trillion, seven billion, seven hundred seventy-five million, eight hundred twenty-six thousand, six hundred twenty-one".