20052351615 has 32 divisors (see below), whose sum is σ = 33983375040. Its totient is φ = 10061840384.

The previous prime is 20052351593. The next prime is 20052351619. The reversal of 20052351615 is 51615325002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20052351615 - 2⁸ = 20052351359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20052351619) 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, 774967 + ... + 800423.

It is an arithmetic number, because the mean of its divisors is an integer number (1061980470).

Almost surely, 2^20052351615 is an apocalyptic number.

20052351615 is a deficient number, since it is larger than the sum of its proper divisors (13931023425).

20052351615 is a wasteful number, since it uses less digits than its factorization.

20052351615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28571.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 20052351615 its reverse (51615325002), we get a palindrome (71667676617).

The spelling of 20052351615 in words is "twenty billion, fifty-two million, three hundred fifty-one thousand, six hundred fifteen".