299878368961 has 2 divisors, whose sum is σ = 299878368962. Its totient is φ = 299878368960.

The previous prime is 299878368943. The next prime is 299878368983. The reversal of 299878368961 is 169863878992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296306035600 + 3572333361 = 544340^2 + 59769^2 .

It is a cyclic number.

It is not a de Polignac number, because 299878368961 - 2²¹ = 299876271809 is a prime.

It is not a weakly prime, because it can be changed into another prime (299878368991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149939184480 + 149939184481.

It is an arithmetic number, because the mean of its divisors is an integer number (149939184481).

Almost surely, 2^299878368961 is an apocalyptic number.

It is an amenable number.

299878368961 is a deficient number, since it is larger than the sum of its proper divisors (1).

299878368961 is an equidigital number, since it uses as much as digits as its factorization.

299878368961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564350976, while the sum is 76.

The spelling of 299878368961 in words is "two hundred ninety-nine billion, eight hundred seventy-eight million, three hundred sixty-eight thousand, nine hundred sixty-one".