12641420235 has 32 divisors (see below), whose sum is σ = 21443268672. Its totient is φ = 6337433600.

The previous prime is 12641420213. The next prime is 12641420251. The reversal of 12641420235 is 53202414621.

It is not a de Polignac number, because 12641420235 - 2⁵ = 12641420203 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172135 + ... + 234335.

It is an arithmetic number, because the mean of its divisors is an integer number (670102146).

Almost surely, 2^12641420235 is an apocalyptic number.

12641420235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12641420235 is a deficient number, since it is larger than the sum of its proper divisors (8801848437).

12641420235 is a wasteful number, since it uses less digits than its factorization.

12641420235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63023.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 12641420235 its reverse (53202414621), we get a palindrome (65843834856).

The spelling of 12641420235 in words is "twelve billion, six hundred forty-one million, four hundred twenty thousand, two hundred thirty-five".