20050133515 has 16 divisors (see below), whose sum is σ = 25369264800. Its totient is φ = 15170222592.

The previous prime is 20050133507. The next prime is 20050133563. The reversal of 20050133515 is 51533105002.

It is not a de Polignac number, because 20050133515 - 2³ = 20050133507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20050133515.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121620 + ... + 234289.

It is an arithmetic number, because the mean of its divisors is an integer number (1585579050).

Almost surely, 2^20050133515 is an apocalyptic number.

20050133515 is a deficient number, since it is larger than the sum of its proper divisors (5319131285).

20050133515 is a wasteful number, since it uses less digits than its factorization.

20050133515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356526.

The product of its (nonzero) digits is 2250, while the sum is 25.

Adding to 20050133515 its reverse (51533105002), we get a palindrome (71583238517).

The spelling of 20050133515 in words is "twenty billion, fifty million, one hundred thirty-three thousand, five hundred fifteen".