12902691285 has 112 divisors (see below), whose sum is σ = 26659056960. Its totient is φ = 5926245120.

The previous prime is 12902691283. The next prime is 12902691289. The reversal of 12902691285 is 58219620921.

It is a happy number.

It is not a de Polignac number, because 12902691285 - 2¹ = 12902691283 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 12902691285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12902691283) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 753337 + ... + 770273.

Almost surely, 2^12902691285 is an apocalyptic number.

12902691285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12902691285 is an abundant number, since it is smaller than the sum of its proper divisors (13756365675).

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

12902691285 is a wasteful number, since it uses less digits than its factorization.

12902691285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16990 (or 16975 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 12902691285 in words is "twelve billion, nine hundred two million, six hundred ninety-one thousand, two hundred eighty-five".