20050005515 has 8 divisors (see below), whose sum is σ = 24454433328. Its totient is φ = 15777053280.

The previous prime is 20050005509. The next prime is 20050005539. The reversal of 20050005515 is 51550005002.

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

It is not a de Polignac number, because 20050005515 - 2⁸ = 20050005259 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, 32868557 + ... + 32869166.

It is an arithmetic number, because the mean of its divisors is an integer number (3056804166).

Almost surely, 2^20050005515 is an apocalyptic number.

20050005515 is a deficient number, since it is larger than the sum of its proper divisors (4404427813).

20050005515 is an equidigital number, since it uses as much as digits as its factorization.

20050005515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65737789.

The product of its (nonzero) digits is 1250, while the sum is 23.

The spelling of 20050005515 in words is "twenty billion, fifty million, five thousand, five hundred fifteen".