398196497507507 has 2 divisors, whose sum is σ = 398196497507508. Its totient is φ = 398196497507506.

The previous prime is 398196497507461. The next prime is 398196497507531. The reversal of 398196497507507 is 705705794691893.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398196497507507 - 2³⁰ = 398195423765683 is a prime.

It is not a weakly prime, because it can be changed into another prime (398196497507537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199098248753753 + 199098248753754.

It is an arithmetic number, because the mean of its divisors is an integer number (199098248753754).

Almost surely, 2^{398196497507507} is an apocalyptic number.

398196497507507 is a deficient number, since it is larger than the sum of its proper divisors (1).

398196497507507 is an equidigital number, since it uses as much as digits as its factorization.

398196497507507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600676800, while the sum is 80.

The spelling of 398196497507507 in words is "three hundred ninety-eight trillion, one hundred ninety-six billion, four hundred ninety-seven million, five hundred seven thousand, five hundred seven".