11481001643 has 16 divisors (see below), whose sum is σ = 11721405696. Its totient is φ = 11243400480.

The previous prime is 11481001633. The next prime is 11481001673. The reversal of 11481001643 is 34610018411.

11481001643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11481001643 - 2¹⁴ = 11480985259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11481001633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7439930 + ... + 7441472.

It is an arithmetic number, because the mean of its divisors is an integer number (732587856).

Almost surely, 2^11481001643 is an apocalyptic number.

11481001643 is a deficient number, since it is larger than the sum of its proper divisors (240404053).

11481001643 is a wasteful number, since it uses less digits than its factorization.

11481001643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 11481001643 in words is "eleven billion, four hundred eighty-one million, one thousand, six hundred forty-three".