11552402566 has 4 divisors (see below), whose sum is σ = 17328603852. Its totient is φ = 5776201282.

The previous prime is 11552402551. The next prime is 11552402567. The reversal of 11552402566 is 66520425511.

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

It is a super-4 number, since 4×11552402566⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11552402567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2888100640 + ... + 2888100643.

It is an arithmetic number, because the mean of its divisors is an integer number (4332150963).

Almost surely, 2^11552402566 is an apocalyptic number.

11552402566 is a deficient number, since it is larger than the sum of its proper divisors (5776201286).

11552402566 is an equidigital number, since it uses as much as digits as its factorization.

11552402566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776201285.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 11552402566 in words is "eleven billion, five hundred fifty-two million, four hundred two thousand, five hundred sixty-six".