11345821967 has 4 divisors (see below), whose sum is σ = 11711816256. Its totient is φ = 10979827680.

The previous prime is 11345821957. The next prime is 11345821997. The reversal of 11345821967 is 76912854311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11345821967 - 2⁴ = 11345821951 is a prime.

It is a super-2 number, since 2×11345821967² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11345821957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182997098 + ... + 182997159.

It is an arithmetic number, because the mean of its divisors is an integer number (2927954064).

Almost surely, 2^11345821967 is an apocalyptic number.

11345821967 is a deficient number, since it is larger than the sum of its proper divisors (365994289).

11345821967 is an equidigital number, since it uses as much as digits as its factorization.

11345821967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365994288.

The product of its digits is 362880, while the sum is 47.

The spelling of 11345821967 in words is "eleven billion, three hundred forty-five million, eight hundred twenty-one thousand, nine hundred sixty-seven".