7901144203949 has 2 divisors, whose sum is σ = 7901144203950. Its totient is φ = 7901144203948.

The previous prime is 7901144203933. The next prime is 7901144204017. The reversal of 7901144203949 is 9493024411097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7113342397225 + 787801806724 = 2667085^2 + 887582^2 .

It is a cyclic number.

It is not a de Polignac number, because 7901144203949 - 2⁴ = 7901144203933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7901144203949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7901114203949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3950572101974 + 3950572101975.

It is an arithmetic number, because the mean of its divisors is an integer number (3950572101975).

Almost surely, 2^{7901144203949} is an apocalyptic number.

It is an amenable number.

7901144203949 is a deficient number, since it is larger than the sum of its proper divisors (1).

7901144203949 is an equidigital number, since it uses as much as digits as its factorization.

7901144203949 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 53.

The spelling of 7901144203949 in words is "seven trillion, nine hundred one billion, one hundred forty-four million, two hundred three thousand, nine hundred forty-nine".