21601677334634 has 16 divisors (see below), whose sum is σ = 32613077070720. Its totient is φ = 10730761057440.

The previous prime is 21601677334631. The next prime is 21601677334733. The reversal of 21601677334634 is 43643377610612.

It is not an unprimeable number, because it can be changed into a prime (21601677334631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26957747 + ... + 27747494.

It is an arithmetic number, because the mean of its divisors is an integer number (2038317316920).

Almost surely, 2^{21601677334634} is an apocalyptic number.

21601677334634 is a deficient number, since it is larger than the sum of its proper divisors (11011399736086).

21601677334634 is a wasteful number, since it uses less digits than its factorization.

21601677334634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54706525.

The product of its (nonzero) digits is 9144576, while the sum is 53.

The spelling of 21601677334634 in words is "twenty-one trillion, six hundred one billion, six hundred seventy-seven million, three hundred thirty-four thousand, six hundred thirty-four".