12935018385 has 80 divisors (see below), whose sum is σ = 23714482176. Its totient is φ = 6743596032.

The previous prime is 12935018381. The next prime is 12935018407. The reversal of 12935018385 is 58381053921.

It is not a de Polignac number, because 12935018385 - 2² = 12935018381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12935018385.

It is not an unprimeable number, because it can be changed into a prime (12935018381) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3258672 + ... + 3262638.

Almost surely, 2^12935018385 is an apocalyptic number.

12935018385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12935018385 is a deficient number, since it is larger than the sum of its proper divisors (10779463791).

12935018385 is an equidigital number, since it uses as much as digits as its factorization.

12935018385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4164 (or 4155 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 12935018385 in words is "twelve billion, nine hundred thirty-five million, eighteen thousand, three hundred eighty-five".