12462009891 has 16 divisors (see below), whose sum is σ = 17936328960. Its totient is φ = 7672760480.

The previous prime is 12462009871. The next prime is 12462009907. The reversal of 12462009891 is 19890026421.

It is a cyclic number.

It is not a de Polignac number, because 12462009891 - 2⁹ = 12462009379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12462009821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3111945 + ... + 3115946.

It is an arithmetic number, because the mean of its divisors is an integer number (1121020560).

Almost surely, 2^12462009891 is an apocalyptic number.

12462009891 is a deficient number, since it is larger than the sum of its proper divisors (5474319069).

12462009891 is a wasteful number, since it uses less digits than its factorization.

12462009891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6227946.

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 12462009891 in words is "twelve billion, four hundred sixty-two million, nine thousand, eight hundred ninety-one".