11391904797 has 48 divisors (see below), whose sum is σ = 19046970432. Its totient is φ = 6003002880.

The previous prime is 11391904793. The next prime is 11391904801. The reversal of 11391904797 is 79740919311.

It is an interprime number because it is at equal distance from previous prime (11391904793) and next prime (11391904801).

It is not a de Polignac number, because 11391904797 - 2² = 11391904793 is a prime.

It is a super-2 number, since 2×11391904797² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11391904793) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2495397 + ... + 2499957.

It is an arithmetic number, because the mean of its divisors is an integer number (396811884).

Almost surely, 2^11391904797 is an apocalyptic number.

It is an amenable number.

11391904797 is a deficient number, since it is larger than the sum of its proper divisors (7655065635).

11391904797 is a wasteful number, since it uses less digits than its factorization.

11391904797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5898 (or 5891 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 51.

The spelling of 11391904797 in words is "eleven billion, three hundred ninety-one million, nine hundred four thousand, seven hundred ninety-seven".