399297706051 has 2 divisors, whose sum is σ = 399297706052. Its totient is φ = 399297706050.

The previous prime is 399297706043. The next prime is 399297706111. The reversal of 399297706051 is 150607792993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399297706051 - 2³ = 399297706043 is a prime.

It is not a weakly prime, because it can be changed into another prime (399297706651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199648853025 + 199648853026.

It is an arithmetic number, because the mean of its divisors is an integer number (199648853026).

Almost surely, 2^399297706051 is an apocalyptic number.

399297706051 is a deficient number, since it is larger than the sum of its proper divisors (1).

399297706051 is an equidigital number, since it uses as much as digits as its factorization.

399297706051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6429780, while the sum is 58.

The spelling of 399297706051 in words is "three hundred ninety-nine billion, two hundred ninety-seven million, seven hundred six thousand, fifty-one".