20006112515 has 16 divisors (see below), whose sum is σ = 24296954880. Its totient is φ = 15812858880.

The previous prime is 20006112493. The next prime is 20006112523. The reversal of 20006112515 is 51521160002.

It is a happy number.

It is not a de Polignac number, because 20006112515 - 2¹⁰ = 20006111491 is a prime.

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, 87671 + ... + 218399.

It is an arithmetic number, because the mean of its divisors is an integer number (1518559680).

Almost surely, 2^20006112515 is an apocalyptic number.

20006112515 is a deficient number, since it is larger than the sum of its proper divisors (4290842365).

20006112515 is a wasteful number, since it uses less digits than its factorization.

20006112515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131102.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 20006112515 its reverse (51521160002), we get a palindrome (71527272517).

The spelling of 20006112515 in words is "twenty billion, six million, one hundred twelve thousand, five hundred fifteen".