20502427615 has 8 divisors (see below), whose sum is σ = 24604113888. Its totient is φ = 16401141600.

The previous prime is 20502427609. The next prime is 20502427637. The reversal of 20502427615 is 51672420502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20502427615 - 2¹³ = 20502419423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27390 + ... + 204340.

It is an arithmetic number, because the mean of its divisors is an integer number (3075514236).

Almost surely, 2^20502427615 is an apocalyptic number.

20502427615 is a deficient number, since it is larger than the sum of its proper divisors (4101686273).

20502427615 is a wasteful number, since it uses less digits than its factorization.

20502427615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200129.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 20502427615 in words is "twenty billion, five hundred two million, four hundred twenty-seven thousand, six hundred fifteen".