12905154509 has 12 divisors (see below), whose sum is σ = 14014555776. Its totient is φ = 11878066512.

The previous prime is 12905154481. The next prime is 12905154511. The reversal of 12905154509 is 90545150921.

It is not a de Polignac number, because 12905154509 - 2⁸ = 12905154253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12905154569) 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, 51389 + ... + 168674.

It is an arithmetic number, because the mean of its divisors is an integer number (1167879648).

Almost surely, 2^12905154509 is an apocalyptic number.

It is an amenable number.

12905154509 is a deficient number, since it is larger than the sum of its proper divisors (1109401267).

12905154509 is a wasteful number, since it uses less digits than its factorization.

12905154509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220436 (or 220423 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 41.

The spelling of 12905154509 in words is "twelve billion, nine hundred five million, one hundred fifty-four thousand, five hundred nine".