11005252143 has 12 divisors (see below), whose sum is σ = 15486616728. Its totient is φ = 6950684880.

The previous prime is 11005252099. The next prime is 11005252157. The reversal of 11005252143 is 34125250011.

It is a happy number.

It is not a de Polignac number, because 11005252143 - 2¹² = 11005248047 is a prime.

It is a super-2 number, since 2×11005252143² (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 (11005252943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5079828 + ... + 5081993.

It is an arithmetic number, because the mean of its divisors is an integer number (1290551394).

Almost surely, 2^11005252143 is an apocalyptic number.

11005252143 is a deficient number, since it is larger than the sum of its proper divisors (4481364585).

11005252143 is a wasteful number, since it uses less digits than its factorization.

11005252143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10161862 (or 10161843 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 11005252143 in words is "eleven billion, five million, two hundred fifty-two thousand, one hundred forty-three".