2179450294149 has 4 divisors (see below), whose sum is σ = 2905933725536. Its totient is φ = 1452966862764.

The previous prime is 2179450294121. The next prime is 2179450294181. The reversal of 2179450294149 is 9414920549712.

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 not a de Polignac number, because 2179450294149 - 2²⁹ = 2178913423237 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 (2179450294249) 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, 363241715689 + ... + 363241715694.

It is an arithmetic number, because the mean of its divisors is an integer number (726483431384).

Almost surely, 2^{2179450294149} is an apocalyptic number.

It is an amenable number.

2179450294149 is a deficient number, since it is larger than the sum of its proper divisors (726483431387).

2179450294149 is an equidigital number, since it uses as much as digits as its factorization.

2179450294149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726483431386.

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 2179450294149 in words is "two trillion, one hundred seventy-nine billion, four hundred fifty million, two hundred ninety-four thousand, one hundred forty-nine".