21936954606 has 32 divisors (see below), whose sum is σ = 50154508800. Its totient is φ = 6266089056.

The previous prime is 21936954577. The next prime is 21936954653. The reversal of 21936954606 is 60645963912.

It is a congruent number.

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, 103120 + ... + 233468.

It is an arithmetic number, because the mean of its divisors is an integer number (1567328400).

Almost surely, 2^21936954606 is an apocalyptic number.

21936954606 is an abundant number, since it is smaller than the sum of its proper divisors (28217554194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21936954606 is a wasteful number, since it uses less digits than its factorization.

21936954606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134368.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 21936954606 in words is "twenty-one billion, nine hundred thirty-six million, nine hundred fifty-four thousand, six hundred six".