20130820130 has 32 divisors (see below), whose sum is σ = 38381598576. Its totient is φ = 7575773184.

The previous prime is 20130820123. The next prime is 20130820139. The reversal of 20130820130 is 3102803102.

It can be written as a sum of positive squares in 8 ways, for example, as 16981477969 + 3149342161 = 130313^2 + 56119^2 .

It is not an unprimeable number, because it can be changed into a prime (20130820139) 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, 454322 + ... + 496658.

Almost surely, 2^20130820130 is an apocalyptic number.

20130820130 is a deficient number, since it is larger than the sum of its proper divisors (18250778446).

20130820130 is a wasteful number, since it uses less digits than its factorization.

20130820130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45158.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 20130820130 in words is "twenty billion, one hundred thirty million, eight hundred twenty thousand, one hundred thirty".