450121531530 has 64 divisors (see below), whose sum is σ = 1179067580928. Its totient is φ = 109067818560.

The previous prime is 450121531529. The next prime is 450121531553. The reversal of 450121531530 is 35135121054.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359977 + ... + 1014803.

It is an arithmetic number, because the mean of its divisors is an integer number (18422930952).

Almost surely, 2^450121531530 is an apocalyptic number.

450121531530 is an abundant number, since it is smaller than the sum of its proper divisors (728946049398).

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

450121531530 is a wasteful number, since it uses less digits than its factorization.

450121531530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656931.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 450121531530 its reverse (35135121054), we get a palindrome (485256652584).

The spelling of 450121531530 in words is "four hundred fifty billion, one hundred twenty-one million, five hundred thirty-one thousand, five hundred thirty".