12542613220 has 12 divisors (see below), whose sum is σ = 26339487804. Its totient is φ = 5017045280.

The previous prime is 12542613179. The next prime is 12542613221. The reversal of 12542613220 is 2231624521.

It can be written as a sum of positive squares in 2 ways, for example, as 3907000036 + 8635613184 = 62506^2 + 92928^2 .

It is not an unprimeable number, because it can be changed into a prime (12542613221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313565311 + ... + 313565350.

It is an arithmetic number, because the mean of its divisors is an integer number (2194957317).

Almost surely, 2^12542613220 is an apocalyptic number.

12542613220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12542613220 is an abundant number, since it is smaller than the sum of its proper divisors (13796874584).

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

12542613220 is a wasteful number, since it uses less digits than its factorization.

12542613220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627130670 (or 627130668 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 12542613220 in words is "twelve billion, five hundred forty-two million, six hundred thirteen thousand, two hundred twenty".