2279938129957 has 2 divisors, whose sum is σ = 2279938129958. Its totient is φ = 2279938129956.

The previous prime is 2279938129867. The next prime is 2279938129967. The reversal of 2279938129957 is 7599218399722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1937480260356 + 342457869601 = 1391934^2 + 585199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2279938129957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2279938129957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2279938129967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139969064978 + 1139969064979.

It is an arithmetic number, because the mean of its divisors is an integer number (1139969064979).

Almost surely, 2^{2279938129957} is an apocalyptic number.

It is an amenable number.

2279938129957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2279938129957 is an equidigital number, since it uses as much as digits as its factorization.

2279938129957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 308629440, while the sum is 73.

The spelling of 2279938129957 in words is "two trillion, two hundred seventy-nine billion, nine hundred thirty-eight million, one hundred twenty-nine thousand, nine hundred fifty-seven".