21306858314 has 16 divisors (see below), whose sum is σ = 36556688448. Its totient is φ = 9123849312.

The previous prime is 21306858259. The next prime is 21306858347. The reversal of 21306858314 is 41385860312.

It is a super-2 number, since 2×21306858314² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621152 + ... + 654555.

It is an arithmetic number, because the mean of its divisors is an integer number (2284793028).

Almost surely, 2^21306858314 is an apocalyptic number.

21306858314 is a deficient number, since it is larger than the sum of its proper divisors (15249830134).

21306858314 is a wasteful number, since it uses less digits than its factorization.

21306858314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276909.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 21306858314 in words is "twenty-one billion, three hundred six million, eight hundred fifty-eight thousand, three hundred fourteen".