21313352458 has 16 divisors (see below), whose sum is σ = 32527980000. Its totient is φ = 10470871312.

The previous prime is 21313352453. The next prime is 21313352491. The reversal of 21313352458 is 85425331312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21313352453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200493 + ... + 287791.

It is an arithmetic number, because the mean of its divisors is an integer number (2032998750).

Almost surely, 2^21313352458 is an apocalyptic number.

21313352458 is a deficient number, since it is larger than the sum of its proper divisors (11214627542).

21313352458 is a wasteful number, since it uses less digits than its factorization.

21313352458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89429.

The product of its digits is 86400, while the sum is 37.

The spelling of 21313352458 in words is "twenty-one billion, three hundred thirteen million, three hundred fifty-two thousand, four hundred fifty-eight".