21614942946 has 16 divisors (see below), whose sum is σ = 43323260544. Its totient is φ = 7189418544.

The previous prime is 21614942929. The next prime is 21614942977. The reversal of 21614942946 is 64924941612.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21614942895 and 21614942904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3887601 + ... + 3893156.

It is an arithmetic number, because the mean of its divisors is an integer number (2707703784).

Almost surely, 2^21614942946 is an apocalyptic number.

21614942946 is an abundant number, since it is smaller than the sum of its proper divisors (21708317598).

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

21614942946 is a wasteful number, since it uses less digits than its factorization.

21614942946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7781225.

The product of its digits is 746496, while the sum is 48.

The spelling of 21614942946 in words is "twenty-one billion, six hundred fourteen million, nine hundred forty-two thousand, nine hundred forty-six".