421732065547 has 16 divisors (see below), whose sum is σ = 461004248320. Its totient is φ = 383437102752.

The previous prime is 421732065497. The next prime is 421732065607. The reversal of 421732065547 is 745560237124.

It is a cyclic number.

It is not a de Polignac number, because 421732065547 - 2²³ = 421723676939 is a prime.

It is a super-2 number, since 2×421732065547² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421732065497 and 421732065506.

It is not an unprimeable number, because it can be changed into a prime (421732063547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9505738 + ... + 9550000.

It is an arithmetic number, because the mean of its divisors is an integer number (28812765520).

Almost surely, 2^421732065547 is an apocalyptic number.

421732065547 is a deficient number, since it is larger than the sum of its proper divisors (39272182773).

421732065547 is a wasteful number, since it uses less digits than its factorization.

421732065547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55282.

The product of its (nonzero) digits is 1411200, while the sum is 46.

The spelling of 421732065547 in words is "four hundred twenty-one billion, seven hundred thirty-two million, sixty-five thousand, five hundred forty-seven".