198070271951 has 2 divisors, whose sum is σ = 198070271952. Its totient is φ = 198070271950.

The previous prime is 198070271921. The next prime is 198070272017. The reversal of 198070271951 is 159172070891.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198070271951 - 2³⁰ = 196996530127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198070271951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198070271921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99035135975 + 99035135976.

It is an arithmetic number, because the mean of its divisors is an integer number (99035135976).

Almost surely, 2^198070271951 is an apocalyptic number.

198070271951 is a deficient number, since it is larger than the sum of its proper divisors (1).

198070271951 is an equidigital number, since it uses as much as digits as its factorization.

198070271951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 50.

The spelling of 198070271951 in words is "one hundred ninety-eight billion, seventy million, two hundred seventy-one thousand, nine hundred fifty-one".