2155841752679 has 4 divisors (see below), whose sum is σ = 2155844704200. Its totient is φ = 2155838801160.

The previous prime is 2155841752541. The next prime is 2155841752681. The reversal of 2155841752679 is 9762571485512.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2155841752679 - 2¹⁶ = 2155841687143 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 (2155441752679) 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, 515264 + ... + 2139434.

It is an arithmetic number, because the mean of its divisors is an integer number (538961176050).

Almost surely, 2^{2155841752679} is an apocalyptic number.

2155841752679 is a deficient number, since it is larger than the sum of its proper divisors (2951521).

2155841752679 is a wasteful number, since it uses less digits than its factorization.

2155841752679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951520.

The product of its digits is 42336000, while the sum is 62.

The spelling of 2155841752679 in words is "two trillion, one hundred fifty-five billion, eight hundred forty-one million, seven hundred fifty-two thousand, six hundred seventy-nine".