21116142603 has 12 divisors (see below), whose sum is σ = 30619779528. Its totient is φ = 14022650880.

The previous prime is 21116142601. The next prime is 21116142659. The reversal of 21116142603 is 30624161112.

It is a happy number.

21116142603 is a `hidden beast` number, since 2 + 1 + 1 + 16 + 1 + 42 + 603 = 666.

It is not a de Polignac number, because 21116142603 - 2¹ = 21116142601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21116142601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4562353 + ... + 4566978.

It is an arithmetic number, because the mean of its divisors is an integer number (2551648294).

Almost surely, 2^21116142603 is an apocalyptic number.

21116142603 is a deficient number, since it is larger than the sum of its proper divisors (9503636925).

21116142603 is a wasteful number, since it uses less digits than its factorization.

21116142603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9129594 (or 9129591 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 21116142603 in words is "twenty-one billion, one hundred sixteen million, one hundred forty-two thousand, six hundred three".