421253551433 has 8 divisors (see below), whose sum is σ = 494899277376. Its totient is φ = 353499483600.

The previous prime is 421253551391. The next prime is 421253551463. The reversal of 421253551433 is 334155352124.

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 421253551433 - 2¹⁰ = 421253550409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421253551463) 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, 1472914373 + ... + 1472914658.

It is an arithmetic number, because the mean of its divisors is an integer number (61862409672).

Almost surely, 2^421253551433 is an apocalyptic number.

It is an amenable number.

421253551433 is a deficient number, since it is larger than the sum of its proper divisors (73645725943).

421253551433 is a wasteful number, since it uses less digits than its factorization.

421253551433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945829055.

The product of its digits is 216000, while the sum is 38.

The spelling of 421253551433 in words is "four hundred twenty-one billion, two hundred fifty-three million, five hundred fifty-one thousand, four hundred thirty-three".