21614259685 has 8 divisors (see below), whose sum is σ = 27302222880. Its totient is φ = 16381333584.

The previous prime is 21614259649. The next prime is 21614259707. The reversal of 21614259685 is 58695241612.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21614259685 - 2¹⁹ = 21613735397 is a prime.

It is a congruent number.

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, 113759167 + ... + 113759356.

It is an arithmetic number, because the mean of its divisors is an integer number (3412777860).

Almost surely, 2^21614259685 is an apocalyptic number.

It is an amenable number.

21614259685 is a deficient number, since it is larger than the sum of its proper divisors (5687963195).

21614259685 is a wasteful number, since it uses less digits than its factorization.

21614259685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227518547.

The product of its digits is 1036800, while the sum is 49.

The spelling of 21614259685 in words is "twenty-one billion, six hundred fourteen million, two hundred fifty-nine thousand, six hundred eighty-five".