12989950281 has 144 divisors (see below), whose sum is σ = 25181764608. Its totient is φ = 6300866880.

The previous prime is 12989950249. The next prime is 12989950283. The reversal of 12989950281 is 18205998921.

12989950281 is a `hidden beast` number, since 129 + 8 + 9 + 9 + 502 + 8 + 1 = 666.

It is not a de Polignac number, because 12989950281 - 2⁵ = 12989950249 is a prime.

It is a super-2 number, since 2×12989950281² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12989950283) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7538286 + ... + 7540008.

Almost surely, 2^12989950281 is an apocalyptic number.

12989950281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12989950281 is a deficient number, since it is larger than the sum of its proper divisors (12191814327).

12989950281 is a wasteful number, since it uses less digits than its factorization.

12989950281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 12989950281 in words is "twelve billion, nine hundred eighty-nine million, nine hundred fifty thousand, two hundred eighty-one".