2621102663999 has 12 divisors (see below), whose sum is σ = 2790447553584. Its totient is φ = 2461521955584.

The previous prime is 2621102663987. The next prime is 2621102664013. The reversal of 2621102663999 is 9993662011262.

2621102663999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2621102663999 - 2⁴ = 2621102663983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621102663909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9790859 + ... + 10055004.

It is an arithmetic number, because the mean of its divisors is an integer number (232537296132).

Almost surely, 2^{2621102663999} is an apocalyptic number.

2621102663999 is a deficient number, since it is larger than the sum of its proper divisors (169344889585).

2621102663999 is a wasteful number, since it uses less digits than its factorization.

2621102663999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19846354 (or 19846337 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 56.

The spelling of 2621102663999 in words is "two trillion, six hundred twenty-one billion, one hundred two million, six hundred sixty-three thousand, nine hundred ninety-nine".