20516164124603 has 16 divisors (see below), whose sum is σ = 24330244916736. Its totient is φ = 16934403386880.

The previous prime is 20516164124597. The next prime is 20516164124609. The reversal of 20516164124603 is 30642146161502.

It is an interprime number because it is at equal distance from previous prime (20516164124597) and next prime (20516164124609).

It is not a de Polignac number, because 20516164124603 - 2⁴ = 20516164124587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20516164124609) 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, 479978726 + ... + 480021467.

It is an arithmetic number, because the mean of its divisors is an integer number (1520640307296).

Almost surely, 2^{20516164124603} is an apocalyptic number.

20516164124603 is a deficient number, since it is larger than the sum of its proper divisors (3814080792133).

20516164124603 is an equidigital number, since it uses as much as digits as its factorization.

20516164124603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960000314.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 20516164124603 in words is "twenty trillion, five hundred sixteen billion, one hundred sixty-four million, one hundred twenty-four thousand, six hundred three".