1398822656971 has 2 divisors, whose sum is σ = 1398822656972. Its totient is φ = 1398822656970.

The previous prime is 1398822656941. The next prime is 1398822656981. The reversal of 1398822656971 is 1796562288931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1398822656971 - 2¹⁵ = 1398822624203 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1398822656897 and 1398822656906.

It is not a weakly prime, because it can be changed into another prime (1398822656941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699411328485 + 699411328486.

It is an arithmetic number, because the mean of its divisors is an integer number (699411328486).

Almost surely, 2^{1398822656971} is an apocalyptic number.

1398822656971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398822656971 is an equidigital number, since it uses as much as digits as its factorization.

1398822656971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 67.

The spelling of 1398822656971 in words is "one trillion, three hundred ninety-eight billion, eight hundred twenty-two million, six hundred fifty-six thousand, nine hundred seventy-one".