14215421154521 has 32 divisors (see below), whose sum is σ = 15032750100480. Its totient is φ = 13415975141184.

The previous prime is 14215421154509. The next prime is 14215421154547. The reversal of 14215421154521 is 12545112451241.

14215421154521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-14215421154521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14215421157521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2083452716 + ... + 2083459538.

It is an arithmetic number, because the mean of its divisors is an integer number (469773440640).

Almost surely, 2^{14215421154521} is an apocalyptic number.

It is an amenable number.

14215421154521 is a deficient number, since it is larger than the sum of its proper divisors (817328945959).

14215421154521 is a wasteful number, since it uses less digits than its factorization.

14215421154521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10925.

The product of its digits is 64000, while the sum is 38.

The spelling of 14215421154521 in words is "fourteen trillion, two hundred fifteen billion, four hundred twenty-one million, one hundred fifty-four thousand, five hundred twenty-one".