11655556546 has 4 divisors (see below), whose sum is σ = 17483334822. Its totient is φ = 5827778272.

The previous prime is 11655556543. The next prime is 11655556553. The reversal of 11655556546 is 64565555611.

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

It can be written as a sum of positive squares in only one way, i.e., 11580127321 + 75429225 = 107611^2 + 8685^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11655556546.

It is not an unprimeable number, because it can be changed into a prime (11655556543) 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 as a sum of consecutive naturals, namely, 2913889135 + ... + 2913889138.

Almost surely, 2^11655556546 is an apocalyptic number.

11655556546 is a deficient number, since it is larger than the sum of its proper divisors (5827778276).

11655556546 is an equidigital number, since it uses as much as digits as its factorization.

11655556546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5827778275.

The product of its digits is 2700000, while the sum is 49.

It can be divided in two parts, 116555565 and 46, that added together give a palindrome (116555611).

The spelling of 11655556546 in words is "eleven billion, six hundred fifty-five million, five hundred fifty-six thousand, five hundred forty-six".