12900145909 has 12 divisors (see below), whose sum is σ = 15233954592. Its totient is φ = 10700576280.

The previous prime is 12900145873. The next prime is 12900145927. The reversal of 12900145909 is 90954100921.

It is not a de Polignac number, because 12900145909 - 2¹³ = 12900137717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12900145949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 952107 + ... + 965560.

It is an arithmetic number, because the mean of its divisors is an integer number (1269496216).

Almost surely, 2^12900145909 is an apocalyptic number.

It is an amenable number.

12900145909 is a deficient number, since it is larger than the sum of its proper divisors (2333808683).

12900145909 is an equidigital number, since it uses as much as digits as its factorization.

12900145909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917736 (or 1917705 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 12900145909 in words is "twelve billion, nine hundred million, one hundred forty-five thousand, nine hundred nine".