21614149399 has 8 divisors (see below), whose sum is σ = 21705525072. Its totient is φ = 21522816000.

The previous prime is 21614149373. The next prime is 21614149411. The reversal of 21614149399 is 99394141612.

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 21614149399 - 2⁹ = 21614148887 is a prime.

It is a super-2 number, since 2×21614149399² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21614149339) 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, 1411287 + ... + 1426519.

It is an arithmetic number, because the mean of its divisors is an integer number (2713190634).

Almost surely, 2^21614149399 is an apocalyptic number.

21614149399 is a deficient number, since it is larger than the sum of its proper divisors (91375673).

21614149399 is a wasteful number, since it uses less digits than its factorization.

21614149399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21137.

The product of its digits is 419904, while the sum is 49.

The spelling of 21614149399 in words is "twenty-one billion, six hundred fourteen million, one hundred forty-nine thousand, three hundred ninety-nine".