11891853798 has 64 divisors (see below), whose sum is σ = 28049690880. Its totient is φ = 3321648000.

The previous prime is 11891853739. The next prime is 11891853823. The reversal of 11891853798 is 89735819811.

It is a happy number.

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, 81753 + ... + 174548.

It is an arithmetic number, because the mean of its divisors is an integer number (438276420).

Almost surely, 2^11891853798 is an apocalyptic number.

11891853798 is an abundant number, since it is smaller than the sum of its proper divisors (16157837082).

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

11891853798 is a wasteful number, since it uses less digits than its factorization.

11891853798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256373.

The product of its digits is 4354560, while the sum is 60.

The spelling of 11891853798 in words is "eleven billion, eight hundred ninety-one million, eight hundred fifty-three thousand, seven hundred ninety-eight".