2179018932049 has 2 divisors, whose sum is σ = 2179018932050. Its totient is φ = 2179018932048.

The previous prime is 2179018932037. The next prime is 2179018932067. The reversal of 2179018932049 is 9402398109712.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1328947840000 + 850071092049 = 1152800^2 + 921993^2 .

It is a cyclic number.

It is not a de Polignac number, because 2179018932049 - 2²⁹ = 2178482061137 is a prime.

It is not a weakly prime, because it can be changed into another prime (2179018932749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089509466024 + 1089509466025.

It is an arithmetic number, because the mean of its divisors is an integer number (1089509466025).

Almost surely, 2^{2179018932049} is an apocalyptic number.

It is an amenable number.

2179018932049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2179018932049 is an equidigital number, since it uses as much as digits as its factorization.

2179018932049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 2179018932049 in words is "two trillion, one hundred seventy-nine billion, eighteen million, nine hundred thirty-two thousand, forty-nine".