398095064651 has 2 divisors, whose sum is σ = 398095064652. Its totient is φ = 398095064650.

The previous prime is 398095064639. The next prime is 398095064657. The reversal of 398095064651 is 156460590893.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398095064651 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (398095064657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199047532325 + 199047532326.

It is an arithmetic number, because the mean of its divisors is an integer number (199047532326).

Almost surely, 2^398095064651 is an apocalyptic number.

398095064651 is a deficient number, since it is larger than the sum of its proper divisors (1).

398095064651 is an equidigital number, since it uses as much as digits as its factorization.

398095064651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 398095064651 in words is "three hundred ninety-eight billion, ninety-five million, sixty-four thousand, six hundred fifty-one".