12507999982 has 4 divisors (see below), whose sum is σ = 18761999976. Its totient is φ = 6253999990.

The previous prime is 12507999949. The next prime is 12507999983. The reversal of 12507999982 is 28999970521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28999970521 = 101 ⋅287128421.

It is a self number, because there is not a number n which added to its sum of digits gives 12507999982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507999983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3126999994 + ... + 3126999997.

It is an arithmetic number, because the mean of its divisors is an integer number (4690499994).

Almost surely, 2^12507999982 is an apocalyptic number.

12507999982 is a deficient number, since it is larger than the sum of its proper divisors (6253999994).

12507999982 is an equidigital number, since it uses as much as digits as its factorization.

12507999982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6253999993.

The product of its (nonzero) digits is 7348320, while the sum is 61.

The spelling of 12507999982 in words is "twelve billion, five hundred seven million, nine hundred ninety-nine thousand, nine hundred eighty-two".