21738601059 has 8 divisors (see below), whose sum is σ = 33125487360. Its totient is φ = 12422057736.

The previous prime is 21738600991. The next prime is 21738601067. The reversal of 21738601059 is 95010683712.

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

It is not a de Polignac number, because 21738601059 - 2⁷ = 21738600931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21738601059.

It is not an unprimeable number, because it can be changed into a prime (21738601099) by changing a digit.

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, 517585719 + ... + 517585760.

It is an arithmetic number, because the mean of its divisors is an integer number (4140685920).

Almost surely, 2^21738601059 is an apocalyptic number.

21738601059 is a deficient number, since it is larger than the sum of its proper divisors (11386886301).

21738601059 is a wasteful number, since it uses less digits than its factorization.

21738601059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035171489.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 21738601059 in words is "twenty-one billion, seven hundred thirty-eight million, six hundred one thousand, fifty-nine".