21616811035 has 16 divisors (see below), whose sum is σ = 26797784832. Its totient is φ = 16722576000.

The previous prime is 21616810987. The next prime is 21616811063. The reversal of 21616811035 is 53011861612.

It is not a de Polignac number, because 21616811035 - 2¹³ = 21616802843 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148057 + ... + 255253.

It is an arithmetic number, because the mean of its divisors is an integer number (1674861552).

Almost surely, 2^21616811035 is an apocalyptic number.

21616811035 is a deficient number, since it is larger than the sum of its proper divisors (5180973797).

21616811035 is a wasteful number, since it uses less digits than its factorization.

21616811035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108534.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 21616811035 in words is "twenty-one billion, six hundred sixteen million, eight hundred eleven thousand, thirty-five".