450131400520 has 16 divisors (see below), whose sum is σ = 1012795651260. Its totient is φ = 180052560192.

The previous prime is 450131400493. The next prime is 450131400541. The reversal of 450131400520 is 25004131054.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 396428899876 + 53702500644 = 629626^2 + 231738^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5626642467 + ... + 5626642546.

Almost surely, 2^450131400520 is an apocalyptic number.

450131400520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450131400520 is an abundant number, since it is smaller than the sum of its proper divisors (562664250740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450131400520 is a wasteful number, since it uses less digits than its factorization.

450131400520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11253285024 (or 11253285020 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 450131400520 its reverse (25004131054), we get a palindrome (475135531574).

The spelling of 450131400520 in words is "four hundred fifty billion, one hundred thirty-one million, four hundred thousand, five hundred twenty".