12781091010 has 32 divisors (see below), whose sum is σ = 30681830592. Its totient is φ = 3407489600.

The previous prime is 12781091009. The next prime is 12781091017. The reversal of 12781091010 is 1019018721.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (12781091017) 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, 85672 + ... + 181388.

It is an arithmetic number, because the mean of its divisors is an integer number (958807206).

Almost surely, 2^12781091010 is an apocalyptic number.

12781091010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12781091010 is an abundant number, since it is smaller than the sum of its proper divisors (17900739582).

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

12781091010 is a wasteful number, since it uses less digits than its factorization.

12781091010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100178.

The product of its (nonzero) digits is 1008, while the sum is 30.

The spelling of 12781091010 in words is "twelve billion, seven hundred eighty-one million, ninety-one thousand, ten".