12694543290 has 128 divisors (see below), whose sum is σ = 39770438400. Its totient is φ = 2840728320.

The previous prime is 12694543289. The next prime is 12694543313. The reversal of 12694543290 is 9234549621.

12694543290 is a `hidden beast` number, since 12 + 6 + 9 + 4 + 543 + 2 + 90 = 666.

It is a super-2 number, since 2×12694543290² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 125785 + ... + 203004.

It is an arithmetic number, because the mean of its divisors is an integer number (310706550).

Almost surely, 2^12694543290 is an apocalyptic number.

12694543290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12694543290 is an abundant number, since it is smaller than the sum of its proper divisors (27075895110).

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

12694543290 is a wasteful number, since it uses less digits than its factorization.

12694543290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328829 (or 328823 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 12694543290 in words is "twelve billion, six hundred ninety-four million, five hundred forty-three thousand, two hundred ninety".