2101643680751 has 16 divisors (see below), whose sum is σ = 2120762891520. Its totient is φ = 2082582290880.

The previous prime is 2101643680621. The next prime is 2101643680769. The reversal of 2101643680751 is 1570863461012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101643680751 is a prime.

It is a super-2 number, since 2×2101643680751² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101643685751) 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, 259875230 + ... + 259883316.

It is an arithmetic number, because the mean of its divisors is an integer number (132547680720).

Almost surely, 2^{2101643680751} is an apocalyptic number.

2101643680751 is a deficient number, since it is larger than the sum of its proper divisors (19119210769).

2101643680751 is a wasteful number, since it uses less digits than its factorization.

2101643680751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11374.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 2101643680751 in words is "two trillion, one hundred one billion, six hundred forty-three million, six hundred eighty thousand, seven hundred fifty-one".