20320025313015 has 24 divisors (see below), whose sum is σ = 36435907460160. Its totient is φ = 10463645217984.

The previous prime is 20320025312963. The next prime is 20320025313043. The reversal of 20320025313015 is 51031352002302.

It is a happy number.

20320025313015 is a `hidden beast` number, since 2 + 0 + 320 + 0 + 2 + 5 + 31 + 301 + 5 = 666.

It is not a de Polignac number, because 20320025313015 - 2¹⁷ = 20320025181943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20320025313015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7785449007 + ... + 7785451616.

It is an arithmetic number, because the mean of its divisors is an integer number (1518162810840).

Almost surely, 2^{20320025313015} is an apocalyptic number.

20320025313015 is a deficient number, since it is larger than the sum of its proper divisors (16115882147145).

20320025313015 is a wasteful number, since it uses less digits than its factorization.

20320025313015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15570900663 (or 15570900660 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 20320025313015 its reverse (51031352002302), we get a palindrome (71351377315317).

The spelling of 20320025313015 in words is "twenty trillion, three hundred twenty billion, twenty-five million, three hundred thirteen thousand, fifteen".