12581483658 has 16 divisors (see below), whose sum is σ = 26643142080. Its totient is φ = 3947132096.

The previous prime is 12581483657. The next prime is 12581483659. The reversal of 12581483658 is 85638418521.

It is an interprime number because it is at equal distance from previous prime (12581483657) and next prime (12581483659).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 12581483658.

It is not an unprimeable number, because it can be changed into a prime (12581483657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61673838 + ... + 61674041.

It is an arithmetic number, because the mean of its divisors is an integer number (1665196380).

Almost surely, 2^12581483658 is an apocalyptic number.

12581483658 is an abundant number, since it is smaller than the sum of its proper divisors (14061658422).

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

12581483658 is a wasteful number, since it uses less digits than its factorization.

12581483658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123347901.

The product of its digits is 1843200, while the sum is 51.

The spelling of 12581483658 in words is "twelve billion, five hundred eighty-one million, four hundred eighty-three thousand, six hundred fifty-eight".