2102754639973 has 4 divisors (see below), whose sum is σ = 2264504996908. Its totient is φ = 1941004283040.

The previous prime is 2102754639959. The next prime is 2102754639989. The reversal of 2102754639973 is 3799364572012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 236407943524 + 1866346696449 = 486218^2 + 1366143^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102754639973 - 2²⁵ = 2102721085541 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 (2102754639473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80875178448 + ... + 80875178473.

It is an arithmetic number, because the mean of its divisors is an integer number (566126249227).

Almost surely, 2^{2102754639973} is an apocalyptic number.

It is an amenable number.

2102754639973 is a deficient number, since it is larger than the sum of its proper divisors (161750356935).

2102754639973 is a wasteful number, since it uses less digits than its factorization.

2102754639973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161750356934.

The product of its (nonzero) digits is 17146080, while the sum is 58.

The spelling of 2102754639973 in words is "two trillion, one hundred two billion, seven hundred fifty-four million, six hundred thirty-nine thousand, nine hundred seventy-three".