12861935480 has 64 divisors (see below), whose sum is σ = 30939330240. Its totient is φ = 4795103232.

The previous prime is 12861935479. The next prime is 12861935483. The reversal of 12861935480 is 8453916821.

It is a happy number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12861935483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21779 + ... + 161858.

It is an arithmetic number, because the mean of its divisors is an integer number (483427035).

Almost surely, 2^12861935480 is an apocalyptic number.

12861935480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12861935480 is an abundant number, since it is smaller than the sum of its proper divisors (18077394760).

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

12861935480 is a wasteful number, since it uses less digits than its factorization.

12861935480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183768 (or 183764 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 12861935480 in words is "twelve billion, eight hundred sixty-one million, nine hundred thirty-five thousand, four hundred eighty".