14535506421 has 6 divisors (see below), whose sum is σ = 20995731510. Its totient is φ = 9690337608.

The previous prime is 14535506417. The next prime is 14535506423. The reversal of 14535506421 is 12460553541.

14535506421 is a `hidden beast` number, since 1 + 4 + 5 + 3 + 5 + 5 + 0 + 642 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7497135396 + 7038371025 = 86586^2 + 83895^2 .

It is not a de Polignac number, because 14535506421 - 2² = 14535506417 is a prime.

It is a super-2 number, since 2×14535506421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14535506423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 807528126 + ... + 807528143.

It is an arithmetic number, because the mean of its divisors is an integer number (3499288585).

Almost surely, 2^14535506421 is an apocalyptic number.

It is an amenable number.

14535506421 is a deficient number, since it is larger than the sum of its proper divisors (6460225089).

14535506421 is a wasteful number, since it uses less digits than its factorization.

14535506421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615056275 (or 1615056272 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 14535506421 in words is "fourteen billion, five hundred thirty-five million, five hundred six thousand, four hundred twenty-one".