20515726313230 has 64 divisors (see below), whose sum is σ = 39160238641920. Its totient is φ = 7711786700800.

The previous prime is 20515726313219. The next prime is 20515726313231. The reversal of 20515726313230 is 3231362751502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20515726313231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378010536 + ... + 378064804.

It is an arithmetic number, because the mean of its divisors is an integer number (611878728780).

Almost surely, 2^{20515726313230} is an apocalyptic number.

20515726313230 is a deficient number, since it is larger than the sum of its proper divisors (18644512328690).

20515726313230 is a wasteful number, since it uses less digits than its factorization.

20515726313230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57645.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 20515726313230 in words is "twenty trillion, five hundred fifteen billion, seven hundred twenty-six million, three hundred thirteen thousand, two hundred thirty".