11856349497 has 16 divisors (see below), whose sum is σ = 16367759360. Its totient is φ = 7626128400.

The previous prime is 11856349493. The next prime is 11856349567. The reversal of 11856349497 is 79494365811.

It is a happy number.

It is not a de Polignac number, because 11856349497 - 2² = 11856349493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11856349493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161797 + ... + 223362.

It is an arithmetic number, because the mean of its divisors is an integer number (1022984960).

Almost surely, 2^11856349497 is an apocalyptic number.

It is an amenable number.

11856349497 is a deficient number, since it is larger than the sum of its proper divisors (4511409863).

11856349497 is a wasteful number, since it uses less digits than its factorization.

11856349497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385524.

The product of its digits is 6531840, while the sum is 57.

The spelling of 11856349497 in words is "eleven billion, eight hundred fifty-six million, three hundred forty-nine thousand, four hundred ninety-seven".