201267175897 has 4 divisors (see below), whose sum is σ = 213106421556. Its totient is φ = 189427930240.

The previous prime is 201267175891. The next prime is 201267175919. The reversal of 201267175897 is 798571762102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 798571762102 = 2 ⋅399285881051.

It can be written as a sum of positive squares in 2 ways, for example, as 125758181376 + 75508994521 = 354624^2 + 274789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201267175897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201267175891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5919622804 + ... + 5919622837.

It is an arithmetic number, because the mean of its divisors is an integer number (53276605389).

Almost surely, 2^201267175897 is an apocalyptic number.

It is an amenable number.

201267175897 is a deficient number, since it is larger than the sum of its proper divisors (11839245659).

201267175897 is a wasteful number, since it uses less digits than its factorization.

201267175897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11839245658.

The product of its (nonzero) digits is 2963520, while the sum is 55.

The spelling of 201267175897 in words is "two hundred one billion, two hundred sixty-seven million, one hundred seventy-five thousand, eight hundred ninety-seven".