11375503566 has 96 divisors (see below), whose sum is σ = 28014779520. Its totient is φ = 3061800000.

The previous prime is 11375503543. The next prime is 11375503567. The reversal of 11375503566 is 66530557311.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11375503567) 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, 1005441 + ... + 1016691.

It is an arithmetic number, because the mean of its divisors is an integer number (291820620).

Almost surely, 2^11375503566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11375503566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14007389760).

11375503566 is an abundant number, since it is smaller than the sum of its proper divisors (16639275954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11375503566 is a wasteful number, since it uses less digits than its factorization.

11375503566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11470 (or 11463 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 42.

The spelling of 11375503566 in words is "eleven billion, three hundred seventy-five million, five hundred three thousand, five hundred sixty-six".