21313718058 has 16 divisors (see below), whose sum is σ = 43779529440. Its totient is φ = 6912557136.

The previous prime is 21313718051. The next prime is 21313718059. The reversal of 21313718058 is 85081731312.

It is a super-3 number, since 3×21313718058³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21313718051) 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, 48003648 + ... + 48004091.

It is an arithmetic number, because the mean of its divisors is an integer number (2736220590).

Almost surely, 2^21313718058 is an apocalyptic number.

21313718058 is an abundant number, since it is smaller than the sum of its proper divisors (22465811382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21313718058 is a wasteful number, since it uses less digits than its factorization.

21313718058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96007781.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 21313718058 in words is "twenty-one billion, three hundred thirteen million, seven hundred eighteen thousand, fifty-eight".