20502115435 has 8 divisors (see below), whose sum is σ = 24603516576. Its totient is φ = 16401040320.

The previous prime is 20502115427. The next prime is 20502115483. The reversal of 20502115435 is 53451120502.

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

It is not a de Polignac number, because 20502115435 - 2³ = 20502115427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89442 + ... + 221368.

It is an arithmetic number, because the mean of its divisors is an integer number (3075439572).

Almost surely, 2^20502115435 is an apocalyptic number.

20502115435 is a deficient number, since it is larger than the sum of its proper divisors (4101401141).

20502115435 is a wasteful number, since it uses less digits than its factorization.

20502115435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163013.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 20502115435 its reverse (53451120502), we get a palindrome (73953235937).

The spelling of 20502115435 in words is "twenty billion, five hundred two million, one hundred fifteen thousand, four hundred thirty-five".