1299099957041 has 2 divisors, whose sum is σ = 1299099957042. Its totient is φ = 1299099957040.

The previous prime is 1299099957017. The next prime is 1299099957073. The reversal of 1299099957041 is 1407599909921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 884344636816 + 414755320225 = 940396^2 + 644015^2 .

It is an emirp because it is prime and its reverse (1407599909921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1299099957041 - 2⁶ = 1299099956977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1299099957091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649549978520 + 649549978521.

It is an arithmetic number, because the mean of its divisors is an integer number (649549978521).

Almost surely, 2^{1299099957041} is an apocalyptic number.

It is an amenable number.

1299099957041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299099957041 is an equidigital number, since it uses as much as digits as its factorization.

1299099957041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16533720, while the sum is 65.

The spelling of 1299099957041 in words is "one trillion, two hundred ninety-nine billion, ninety-nine million, nine hundred fifty-seven thousand, forty-one".