12946517890 has 8 divisors (see below), whose sum is σ = 23303732220. Its totient is φ = 5178607152.

The previous prime is 12946517887. The next prime is 12946517917. The reversal of 12946517890 is 9871564921.

It can be written as a sum of positive squares in 2 ways, for example, as 12341210281 + 605307609 = 111091^2 + 24603^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12946517890² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647325885 + ... + 647325904.

Almost surely, 2^12946517890 is an apocalyptic number.

12946517890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12946517890 is a deficient number, since it is larger than the sum of its proper divisors (10357214330).

12946517890 is a wasteful number, since it uses less digits than its factorization.

12946517890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294651796.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 12946517890 in words is "twelve billion, nine hundred forty-six million, five hundred seventeen thousand, eight hundred ninety".