21616062402603 has 4 divisors (see below), whose sum is σ = 28821416536808. Its totient is φ = 14410708268400.

The previous prime is 21616062402509. The next prime is 21616062402607. The reversal of 21616062402603 is 30620426061612.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21616062402603 - 2¹⁸ = 21616062140459 is a prime.

It is a super-2 number, since 2×21616062402603² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21616062402607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3602677067098 + ... + 3602677067103.

It is an arithmetic number, because the mean of its divisors is an integer number (7205354134202).

Almost surely, 2^{21616062402603} is an apocalyptic number.

21616062402603 is a deficient number, since it is larger than the sum of its proper divisors (7205354134205).

21616062402603 is an equidigital number, since it uses as much as digits as its factorization.

21616062402603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7205354134204.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 21616062402603 in words is "twenty-one trillion, six hundred sixteen billion, sixty-two million, four hundred two thousand, six hundred three".