14485688921 has 4 divisors (see below), whose sum is σ = 15802569744. Its totient is φ = 13168808100.

The previous prime is 14485688911. The next prime is 14485688927. The reversal of 14485688921 is 12988658441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 14485688921 - 2²² = 14481494617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14485688927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658440395 + ... + 658440416.

It is an arithmetic number, because the mean of its divisors is an integer number (3950642436).

Almost surely, 2^14485688921 is an apocalyptic number.

14485688921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14485688921 is a deficient number, since it is larger than the sum of its proper divisors (1316880823).

14485688921 is a wasteful number, since it uses less digits than its factorization.

14485688921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316880822.

The product of its digits is 4423680, while the sum is 56.

The spelling of 14485688921 in words is "fourteen billion, four hundred eighty-five million, six hundred eighty-eight thousand, nine hundred twenty-one".