21488100358 has 4 divisors (see below), whose sum is σ = 32232150540. Its totient is φ = 10744050178.

The previous prime is 21488100307. The next prime is 21488100377. The reversal of 21488100358 is 85300188412.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 21488100358.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5372025088 + ... + 5372025091.

It is an arithmetic number, because the mean of its divisors is an integer number (8058037635).

Almost surely, 2^21488100358 is an apocalyptic number.

21488100358 is a deficient number, since it is larger than the sum of its proper divisors (10744050182).

21488100358 is a wasteful number, since it uses less digits than its factorization.

21488100358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10744050181.

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 21488100358 in words is "twenty-one billion, four hundred eighty-eight million, one hundred thousand, three hundred fifty-eight".