20513537142 has 32 divisors (see below), whose sum is σ = 46918310400. Its totient is φ = 5857232448.

The previous prime is 20513537141. The next prime is 20513537147. The reversal of 20513537142 is 24173531502.

20513537142 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20513537141) 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, 91167 + ... + 222122.

It is an arithmetic number, because the mean of its divisors is an integer number (1466197200).

Almost surely, 2^20513537142 is an apocalyptic number.

20513537142 is an abundant number, since it is smaller than the sum of its proper divisors (26404773258).

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

20513537142 is a wasteful number, since it uses less digits than its factorization.

20513537142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314860.

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 20513537142 in words is "twenty billion, five hundred thirteen million, five hundred thirty-seven thousand, one hundred forty-two".