450781909369919 has 8 divisors (see below), whose sum is σ = 456986465356512. Its totient is φ = 444578149635840.

The previous prime is 450781909369873. The next prime is 450781909369943. The reversal of 450781909369919 is 919963909187054.

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 450781909369919 - 2²⁸ = 450781640934463 is a prime.

It is a super-2 number, since 2×450781909369919² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450781906369919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197923034 + ... + 200187639.

It is an arithmetic number, because the mean of its divisors is an integer number (57123308169564).

Almost surely, 2^{450781909369919} is an apocalyptic number.

450781909369919 is a deficient number, since it is larger than the sum of its proper divisors (6204555986593).

450781909369919 is a wasteful number, since it uses less digits than its factorization.

450781909369919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398126257.

The product of its (nonzero) digits is 1190427840, while the sum is 80.

The spelling of 450781909369919 in words is "four hundred fifty trillion, seven hundred eighty-one billion, nine hundred nine million, three hundred sixty-nine thousand, nine hundred nineteen".