12661373060 has 24 divisors (see below), whose sum is σ = 30387295680. Its totient is φ = 4341042144.

The previous prime is 12661373003. The next prime is 12661373069. The reversal of 12661373060 is 6037316621.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 12661373060.

It is not an unprimeable number, because it can be changed into a prime (12661373069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45219050 + ... + 45219329.

It is an arithmetic number, because the mean of its divisors is an integer number (1266137320).

Almost surely, 2^12661373060 is an apocalyptic number.

12661373060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12661373060 is an abundant number, since it is smaller than the sum of its proper divisors (17725922620).

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

12661373060 is a wasteful number, since it uses less digits than its factorization.

12661373060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90438395 (or 90438393 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

Adding to 12661373060 its reverse (6037316621), we get a palindrome (18698689681).

The spelling of 12661373060 in words is "twelve billion, six hundred sixty-one million, three hundred seventy-three thousand, sixty".