380084408505 has 40 divisors (see below), whose sum is σ = 682485891912. Its totient is φ = 202369715712.

The previous prime is 380084408503. The next prime is 380084408519. The reversal of 380084408505 is 505804480083.

It can be written as a sum of positive squares in 4 ways, for example, as 35412088761 + 344672319744 = 188181^2 + 587088^2 .

It is not a de Polignac number, because 380084408505 - 2¹ = 380084408503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (380084408503) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 551134 + ... + 1031463.

Almost surely, 2^380084408505 is an apocalyptic number.

It is an amenable number.

380084408505 is a deficient number, since it is larger than the sum of its proper divisors (302401483407).

380084408505 is a wasteful number, since it uses less digits than its factorization.

380084408505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583207 (or 1583198 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

Adding to 380084408505 its reverse (505804480083), we get a palindrome (885888888588).

The spelling of 380084408505 in words is "three hundred eighty billion, eighty-four million, four hundred eight thousand, five hundred five".