12491380810 has 8 divisors (see below), whose sum is σ = 22484485476. Its totient is φ = 4996552320.

The previous prime is 12491380793. The next prime is 12491380813. The reversal of 12491380810 is 1808319421.

It can be written as a sum of positive squares in 2 ways, for example, as 11520372889 + 971007921 = 107333^2 + 31161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12491380810² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12491380810.

It is not an unprimeable number, because it can be changed into a prime (12491380813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624569031 + ... + 624569050.

Almost surely, 2^12491380810 is an apocalyptic number.

12491380810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12491380810 is a deficient number, since it is larger than the sum of its proper divisors (9993104666).

12491380810 is a wasteful number, since it uses less digits than its factorization.

12491380810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249138088.

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 12491380810 in words is "twelve billion, four hundred ninety-one million, three hundred eighty thousand, eight hundred ten".