11297857830 has 64 divisors (see below), whose sum is σ = 32335746048. Its totient is φ = 2470089600.

The previous prime is 11297857789. The next prime is 11297857871. The reversal of 11297857830 is 3875879211.

It is an interprime number because it is at equal distance from previous prime (11297857789) and next prime (11297857871).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1164721 + ... + 1174380.

It is an arithmetic number, because the mean of its divisors is an integer number (505246032).

Almost surely, 2^11297857830 is an apocalyptic number.

11297857830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11297857830 is an abundant number, since it is smaller than the sum of its proper divisors (21037888218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11297857830 is a wasteful number, since it uses less digits than its factorization.

11297857830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339141.

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 11297857830 in words is "eleven billion, two hundred ninety-seven million, eight hundred fifty-seven thousand, eight hundred thirty".