11543599081280 has 84 divisors (see below), whose sum is σ = 31976063978148. Its totient is φ = 3957805393920.

The previous prime is 11543599081279. The next prime is 11543599081349. The reversal of 11543599081280 is 8218099534511.

It can be written as a sum of positive squares in 2 ways, for example, as 3886291791424 + 7657307289856 = 1971368^2 + 2767184^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368083781 + ... + 368115140.

Almost surely, 2^{11543599081280} is an apocalyptic number.

11543599081280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11543599081280 is an abundant number, since it is smaller than the sum of its proper divisors (20432464896868).

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

11543599081280 is an equidigital number, since it uses as much as digits as its factorization.

11543599081280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736198952 (or 736198935 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 56.

The spelling of 11543599081280 in words is "eleven trillion, five hundred forty-three billion, five hundred ninety-nine million, eighty-one thousand, two hundred eighty".