451216605383 has 4 divisors (see below), whose sum is σ = 451952685288. Its totient is φ = 450480525480.

The previous prime is 451216605349. The next prime is 451216605409. The reversal of 451216605383 is 383506612154.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 451216605383 - 2²⁸ = 450948169927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451216601383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368039033 + ... + 368040258.

It is an arithmetic number, because the mean of its divisors is an integer number (112988171322).

Almost surely, 2^451216605383 is an apocalyptic number.

451216605383 is a deficient number, since it is larger than the sum of its proper divisors (736079905).

451216605383 is an equidigital number, since it uses as much as digits as its factorization.

451216605383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736079904.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 451216605383 in words is "four hundred fifty-one billion, two hundred sixteen million, six hundred five thousand, three hundred eighty-three".