11556532413651 has 4 divisors (see below), whose sum is σ = 15408709884872. Its totient is φ = 7704354942432.

The previous prime is 11556532413649. The next prime is 11556532413683. The reversal of 11556532413651 is 15631423565511.

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

It is not a de Polignac number, because 11556532413651 - 2¹ = 11556532413649 is a prime.

It is a super-2 number, since 2×11556532413651² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11556532413651.

It is not an unprimeable number, because it can be changed into a prime (11556532413631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1926088735606 + ... + 1926088735611.

It is an arithmetic number, because the mean of its divisors is an integer number (3852177471218).

Almost surely, 2^{11556532413651} is an apocalyptic number.

11556532413651 is a deficient number, since it is larger than the sum of its proper divisors (3852177471221).

11556532413651 is an equidigital number, since it uses as much as digits as its factorization.

11556532413651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852177471220.

The product of its digits is 1620000, while the sum is 48.

The spelling of 11556532413651 in words is "eleven trillion, five hundred fifty-six billion, five hundred thirty-two million, four hundred thirteen thousand, six hundred fifty-one".