279798378007 has 2 divisors, whose sum is σ = 279798378008. Its totient is φ = 279798378006.

The previous prime is 279798377909. The next prime is 279798378047. The reversal of 279798378007 is 700873897972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 279798378007 - 2⁷ = 279798377879 is a prime.

It is a super-2 number, since 2×279798378007² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279798378047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139899189003 + 139899189004.

It is an arithmetic number, because the mean of its divisors is an integer number (139899189004).

Almost surely, 2^279798378007 is an apocalyptic number.

279798378007 is a deficient number, since it is larger than the sum of its proper divisors (1).

279798378007 is an equidigital number, since it uses as much as digits as its factorization.

279798378007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74680704, while the sum is 67.

The spelling of 279798378007 in words is "two hundred seventy-nine billion, seven hundred ninety-eight million, three hundred seventy-eight thousand, seven".