21742093358 has 16 divisors (see below), whose sum is σ = 32682548736. Its totient is φ = 10847932920.

The previous prime is 21742093349. The next prime is 21742093393. The reversal of 21742093358 is 85339024712.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2485853 + ... + 2494583.

It is an arithmetic number, because the mean of its divisors is an integer number (2042659296).

Almost surely, 2^21742093358 is an apocalyptic number.

21742093358 is a deficient number, since it is larger than the sum of its proper divisors (10940455378).

21742093358 is a wasteful number, since it uses less digits than its factorization.

21742093358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11239.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 21742093358 in words is "twenty-one billion, seven hundred forty-two million, ninety-three thousand, three hundred fifty-eight".