12997489340 has 24 divisors (see below), whose sum is σ = 29776066992. Its totient is φ = 4726359680.

The previous prime is 12997489339. The next prime is 12997489343. The reversal of 12997489340 is 4398479921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12997489343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29539529 + ... + 29539968.

It is an arithmetic number, because the mean of its divisors is an integer number (1240669458).

Almost surely, 2^12997489340 is an apocalyptic number.

12997489340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12997489340 is an abundant number, since it is smaller than the sum of its proper divisors (16778577652).

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

12997489340 is a wasteful number, since it uses less digits than its factorization.

12997489340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59079517 (or 59079515 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 12997489340 in words is "twelve billion, nine hundred ninety-seven million, four hundred eighty-nine thousand, three hundred forty".