21245614386 has 8 divisors (see below), whose sum is σ = 42491228784. Its totient is φ = 7081871460.

The previous prime is 21245614283. The next prime is 21245614409. The reversal of 21245614386 is 68341654212.

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

21245614386 is an admirable number.

It is a super-3 number, since 3×21245614386³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1770467860 + ... + 1770467871.

It is an arithmetic number, because the mean of its divisors is an integer number (5311403598).

Almost surely, 2^21245614386 is an apocalyptic number.

21245614386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21245614386 is a wasteful number, since it uses less digits than its factorization.

21245614386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540935736.

The product of its digits is 276480, while the sum is 42.

The spelling of 21245614386 in words is "twenty-one billion, two hundred forty-five million, six hundred fourteen thousand, three hundred eighty-six".