20010135515 has 8 divisors (see below), whose sum is σ = 25424642880. Its totient is φ = 15066454912.

The previous prime is 20010135499. The next prime is 20010135521. The reversal of 20010135515 is 51553101002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20010135515 - 2⁴ = 20010135499 is a prime.

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, 117706595 + ... + 117706764.

It is an arithmetic number, because the mean of its divisors is an integer number (3178080360).

Almost surely, 2^20010135515 is an apocalyptic number.

20010135515 is a deficient number, since it is larger than the sum of its proper divisors (5414507365).

20010135515 is a wasteful number, since it uses less digits than its factorization.

20010135515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235413381.

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 20010135515 its reverse (51553101002), we get a palindrome (71563236517).

The spelling of 20010135515 in words is "twenty billion, ten million, one hundred thirty-five thousand, five hundred fifteen".