11345566143 has 4 divisors (see below), whose sum is σ = 15127421528. Its totient is φ = 7563710760.

The previous prime is 11345566139. The next prime is 11345566147. The reversal of 11345566143 is 34166554311.

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

It is an interprime number because it is at equal distance from previous prime (11345566139) and next prime (11345566147).

It is not a de Polignac number, because 11345566143 - 2² = 11345566139 is a prime.

It is a super-2 number, since 2×11345566143² (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 (11345566147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1890927688 + ... + 1890927693.

It is an arithmetic number, because the mean of its divisors is an integer number (3781855382).

Almost surely, 2^11345566143 is an apocalyptic number.

11345566143 is a deficient number, since it is larger than the sum of its proper divisors (3781855385).

11345566143 is an equidigital number, since it uses as much as digits as its factorization.

11345566143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781855384.

The product of its digits is 129600, while the sum is 39.

The spelling of 11345566143 in words is "eleven billion, three hundred forty-five million, five hundred sixty-six thousand, one hundred forty-three".