12147780810 has 64 divisors (see below), whose sum is σ = 32344220160. Its totient is φ = 2894998080.

The previous prime is 12147780773. The next prime is 12147780811. The reversal of 12147780810 is 1808774121.

It is a super-2 number, since 2×12147780810² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12147780811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292492 + ... + 331431.

It is an arithmetic number, because the mean of its divisors is an integer number (505378440).

Almost surely, 2^12147780810 is an apocalyptic number.

12147780810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12147780810 is an abundant number, since it is smaller than the sum of its proper divisors (20196439350).

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

12147780810 is a wasteful number, since it uses less digits than its factorization.

12147780810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624003.

The product of its (nonzero) digits is 25088, while the sum is 39.

The spelling of 12147780810 in words is "twelve billion, one hundred forty-seven million, seven hundred eighty thousand, eight hundred ten".