2179072857149 has 4 divisors (see below), whose sum is σ = 2179077054336. Its totient is φ = 2179068659964.

The previous prime is 2179072857089. The next prime is 2179072857161. The reversal of 2179072857149 is 9417582709712.

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 2179072857149 - 2²⁴ = 2179056079933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2179072857091 and 2179072857100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179072557149) 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, 1188179 + ... + 2402064.

It is an arithmetic number, because the mean of its divisors is an integer number (544769263584).

Almost surely, 2^{2179072857149} is an apocalyptic number.

It is an amenable number.

2179072857149 is a deficient number, since it is larger than the sum of its proper divisors (4197187).

2179072857149 is an equidigital number, since it uses as much as digits as its factorization.

2179072857149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4197186.

The product of its (nonzero) digits is 17781120, while the sum is 62.

The spelling of 2179072857149 in words is "two trillion, one hundred seventy-nine billion, seventy-two million, eight hundred fifty-seven thousand, one hundred forty-nine".