398933655511 has 2 divisors, whose sum is σ = 398933655512. Its totient is φ = 398933655510.

The previous prime is 398933655469. The next prime is 398933655563. The reversal of 398933655511 is 115556339893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398933655511 - 2²³ = 398925266903 is a prime.

It is a super-2 number, since 2×398933655511² (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 (398933625511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199466827755 + 199466827756.

It is an arithmetic number, because the mean of its divisors is an integer number (199466827756).

Almost surely, 2^398933655511 is an apocalyptic number.

398933655511 is a deficient number, since it is larger than the sum of its proper divisors (1).

398933655511 is an equidigital number, since it uses as much as digits as its factorization.

398933655511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122000, while the sum is 58.

The spelling of 398933655511 in words is "three hundred ninety-eight billion, nine hundred thirty-three million, six hundred fifty-five thousand, five hundred eleven".