2102677984349 has 4 divisors (see below), whose sum is σ = 2121285754236. Its totient is φ = 2084070214464.

The previous prime is 2102677984313. The next prime is 2102677984399. The reversal of 2102677984349 is 9434897762012.

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 12071416900 + 2090606567449 = 109870^2 + 1445893^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102677984349 - 2¹² = 2102677980253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102677984291 and 2102677984300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102677984399) 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, 9303884774 + ... + 9303884999.

It is an arithmetic number, because the mean of its divisors is an integer number (530321438559).

Almost surely, 2^{2102677984349} is an apocalyptic number.

It is an amenable number.

2102677984349 is a deficient number, since it is larger than the sum of its proper divisors (18607769887).

2102677984349 is a wasteful number, since it uses less digits than its factorization.

2102677984349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18607769886.

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 2102677984349 in words is "two trillion, one hundred two billion, six hundred seventy-seven million, nine hundred eighty-four thousand, three hundred forty-nine".