11546220421155 has 32 divisors (see below), whose sum is σ = 21191576140800. Its totient is φ = 5258650349952.

The previous prime is 11546220421133. The next prime is 11546220421157. The reversal of 11546220421155 is 55112402264511.

It is not a de Polignac number, because 11546220421155 - 2²⁸ = 11545951985699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11546220421157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204365815 + ... + 204422304.

It is an arithmetic number, because the mean of its divisors is an integer number (662236754400).

Almost surely, 2^{11546220421155} is an apocalyptic number.

11546220421155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11546220421155 is a deficient number, since it is larger than the sum of its proper divisors (9645355719645).

11546220421155 is a wasteful number, since it uses less digits than its factorization.

11546220421155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408788403.

The product of its (nonzero) digits is 96000, while the sum is 39.

Adding to 11546220421155 its reverse (55112402264511), we get a palindrome (66658622685666).

The spelling of 11546220421155 in words is "eleven trillion, five hundred forty-six billion, two hundred twenty million, four hundred twenty-one thousand, one hundred fifty-five".