11891853797 has 8 divisors (see below), whose sum is σ = 12276724992. Its totient is φ = 11507061600.

The previous prime is 11891853739. The next prime is 11891853823. The reversal of 11891853797 is 79735819811.

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

It is a cyclic number.

It is not a de Polignac number, because 11891853797 - 2³⁰ = 10818111973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11891853997) 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, 525878 + ... + 548024.

It is an arithmetic number, because the mean of its divisors is an integer number (1534590624).

Almost surely, 2^11891853797 is an apocalyptic number.

It is an amenable number.

11891853797 is a deficient number, since it is larger than the sum of its proper divisors (384871195).

11891853797 is a wasteful number, since it uses less digits than its factorization.

11891853797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39499.

The product of its digits is 3810240, while the sum is 59.

The spelling of 11891853797 in words is "eleven billion, eight hundred ninety-one million, eight hundred fifty-three thousand, seven hundred ninety-seven".