11297857291 has 8 divisors (see below), whose sum is σ = 12918532064. Its totient is φ = 9678856320.

The previous prime is 11297857267. The next prime is 11297857309. The reversal of 11297857291 is 19275879211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11297857291 - 2¹³ = 11297849099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11297857211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403950 + ... + 431011.

It is an arithmetic number, because the mean of its divisors is an integer number (1614816508).

Almost surely, 2^11297857291 is an apocalyptic number.

11297857291 is a deficient number, since it is larger than the sum of its proper divisors (1620674773).

11297857291 is an equidigital number, since it uses as much as digits as its factorization.

11297857291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836901.

The product of its digits is 635040, while the sum is 52.

The spelling of 11297857291 in words is "eleven billion, two hundred ninety-seven million, eight hundred fifty-seven thousand, two hundred ninety-one".