21689069367458 has 8 divisors (see below), whose sum is σ = 32534605459920. Its totient is φ = 10844200880820.

The previous prime is 21689069367439. The next prime is 21689069367479. The reversal of 21689069367458 is 85476396098612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166820228 + ... + 166950191.

It is an arithmetic number, because the mean of its divisors is an integer number (4066825682490).

It is a 1-persistent number, because it is pandigital, but 2⋅21689069367458 = 43378138734916 is not.

Almost surely, 2^{21689069367458} is an apocalyptic number.

21689069367458 is a deficient number, since it is larger than the sum of its proper divisors (10845536092462).

21689069367458 is a wasteful number, since it uses less digits than its factorization.

21689069367458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333802912.

The product of its (nonzero) digits is 940584960, while the sum is 74.

The spelling of 21689069367458 in words is "twenty-one trillion, six hundred eighty-nine billion, sixty-nine million, three hundred sixty-seven thousand, four hundred fifty-eight".