2718669138421 has 4 divisors (see below), whose sum is σ = 2720749223232. Its totient is φ = 2716589053612.

The previous prime is 2718669138377. The next prime is 2718669138431. The reversal of 2718669138421 is 1248319668172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2718669138421 - 2⁹ = 2718669137909 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 (2718669138431) 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, 1040040445 + ... + 1040043058.

It is an arithmetic number, because the mean of its divisors is an integer number (680187305808).

Almost surely, 2^{2718669138421} is an apocalyptic number.

It is an amenable number.

2718669138421 is a deficient number, since it is larger than the sum of its proper divisors (2080084811).

2718669138421 is a wasteful number, since it uses less digits than its factorization.

2718669138421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080084810.

The product of its digits is 6967296, while the sum is 58.

The spelling of 2718669138421 in words is "two trillion, seven hundred eighteen billion, six hundred sixty-nine million, one hundred thirty-eight thousand, four hundred twenty-one".