20650000515 has 16 divisors (see below), whose sum is σ = 33060727968. Its totient is φ = 11006424576.

The previous prime is 20650000499. The next prime is 20650000517. The reversal of 20650000515 is 51500005602.

It is not a de Polignac number, because 20650000515 - 2⁴ = 20650000499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20650000517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407062 + ... + 454971.

It is an arithmetic number, because the mean of its divisors is an integer number (2066295498).

Almost surely, 2^20650000515 is an apocalyptic number.

20650000515 is a deficient number, since it is larger than the sum of its proper divisors (12410727453).

20650000515 is a wasteful number, since it uses less digits than its factorization.

20650000515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863638.

The product of its (nonzero) digits is 1500, while the sum is 24.

The spelling of 20650000515 in words is "twenty billion, six hundred fifty million, five hundred fifteen", and thus it is an aban number.