12538444270 has 32 divisors (see below), whose sum is σ = 25144805376. Its totient is φ = 4462423200.

The previous prime is 12538444229. The next prime is 12538444271. The reversal of 12538444270 is 7244483521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12538444271) 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, 1207446 + ... + 1217785.

It is an arithmetic number, because the mean of its divisors is an integer number (785775168).

Almost surely, 2^12538444270 is an apocalyptic number.

12538444270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12538444270 is an abundant number, since it is smaller than the sum of its proper divisors (12606361106).

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

12538444270 is a wasteful number, since it uses less digits than its factorization.

12538444270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425296.

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 12538444270 in words is "twelve billion, five hundred thirty-eight million, four hundred forty-four thousand, two hundred seventy".