12720000090 has 64 divisors (see below), whose sum is σ = 34922638080. Its totient is φ = 2904637440.

The previous prime is 12720000071. The next prime is 12720000103. The reversal of 12720000090 is 9000002721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 194266 + ... + 251354.

It is an arithmetic number, because the mean of its divisors is an integer number (545666220).

Almost surely, 2^12720000090 is an apocalyptic number.

12720000090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12720000090 is an abundant number, since it is smaller than the sum of its proper divisors (22202637990).

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

12720000090 is a wasteful number, since it uses less digits than its factorization.

12720000090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58167.

The product of its (nonzero) digits is 252, while the sum is 21.

The spelling of 12720000090 in words is "twelve billion, seven hundred twenty million, ninety", and thus it is an aban number.