21934885670 has 16 divisors (see below), whose sum is σ = 39484501488. Its totient is φ = 8773574880.

The previous prime is 21934885633. The next prime is 21934885741. The reversal of 21934885670 is 7658843912.

21934885670 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21934885670² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372272 + ... + 427148.

It is an arithmetic number, because the mean of its divisors is an integer number (2467781343).

It is a 1-persistent number, because it is pandigital, but 2⋅21934885670 = 43869771340 is not.

Almost surely, 2^21934885670 is an apocalyptic number.

21934885670 is a deficient number, since it is larger than the sum of its proper divisors (17549615818).

21934885670 is a wasteful number, since it uses less digits than its factorization.

21934885670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94855.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 21934885670 in words is "twenty-one billion, nine hundred thirty-four million, eight hundred eighty-five thousand, six hundred seventy".