2101643680707 has 16 divisors (see below), whose sum is σ = 3115055508480. Its totient is φ = 1400416595496.

The previous prime is 2101643680621. The next prime is 2101643680769. The reversal of 2101643680707 is 7070863461012.

2101643680707 is a `hidden beast` number, since 210 + 1 + 6 + 4 + 368 + 0 + 70 + 7 = 666.

It is not a de Polignac number, because 2101643680707 - 2⁷ = 2101643680579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101643680007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18809703 + ... + 18921104.

It is an arithmetic number, because the mean of its divisors is an integer number (194690969280).

Almost surely, 2^{2101643680707} is an apocalyptic number.

2101643680707 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2101643680707 is a deficient number, since it is larger than the sum of its proper divisors (1013411827773).

2101643680707 is a wasteful number, since it uses less digits than its factorization.

2101643680707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37732879 (or 37732873 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 2101643680707 in words is "two trillion, one hundred one billion, six hundred forty-three million, six hundred eighty thousand, seven hundred seven".