12491141920 has 48 divisors (see below), whose sum is σ = 29526026040. Its totient is φ = 4993798144.

The previous prime is 12491141893. The next prime is 12491141941. The reversal of 12491141920 is 2914119421.

It can be written as a sum of positive squares in 4 ways, for example, as 9018161296 + 3472980624 = 94964^2 + 58932^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295896 + ... + 335464.

Almost surely, 2^12491141920 is an apocalyptic number.

12491141920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12491141920 is an abundant number, since it is smaller than the sum of its proper divisors (17034884120).

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

12491141920 is a wasteful number, since it uses less digits than its factorization.

12491141920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41557 (or 41549 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 12491141920 in words is "twelve billion, four hundred ninety-one million, one hundred forty-one thousand, nine hundred twenty".