11813421485 has 16 divisors (see below), whose sum is σ = 14497360560. Its totient is φ = 9237895680.

The previous prime is 11813421461. The next prime is 11813421523. The reversal of 11813421485 is 58412431811.

It can be written as a sum of positive squares in 8 ways, for example, as 186759556 + 11626661929 = 13666^2 + 107827^2 .

It is not a de Polignac number, because 11813421485 - 2⁸ = 11813421229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11576 + ... + 154145.

It is an arithmetic number, because the mean of its divisors is an integer number (906085035).

Almost surely, 2^11813421485 is an apocalyptic number.

It is an amenable number.

11813421485 is a deficient number, since it is larger than the sum of its proper divisors (2683939075).

11813421485 is a wasteful number, since it uses less digits than its factorization.

11813421485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166048.

The product of its digits is 30720, while the sum is 38.

The spelling of 11813421485 in words is "eleven billion, eight hundred thirteen million, four hundred twenty-one thousand, four hundred eighty-five".