20115097267 has 4 divisors (see below), whose sum is σ = 20130488856. Its totient is φ = 20099705680.

The previous prime is 20115097231. The next prime is 20115097319. The reversal of 20115097267 is 76279051102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20115097267 - 2⁷ = 20115097139 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20115097567) 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, 7693834 + ... + 7696447.

It is an arithmetic number, because the mean of its divisors is an integer number (5032622214).

Almost surely, 2^20115097267 is an apocalyptic number.

20115097267 is a deficient number, since it is larger than the sum of its proper divisors (15391589).

20115097267 is a wasteful number, since it uses less digits than its factorization.

20115097267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15391588.

The product of its (nonzero) digits is 52920, while the sum is 40.

The spelling of 20115097267 in words is "twenty billion, one hundred fifteen million, ninety-seven thousand, two hundred sixty-seven".