501445123432 has 128 divisors (see below), whose sum is σ = 1061434264320. Its totient is φ = 220147200000.

The previous prime is 501445123423. The next prime is 501445123469. The reversal of 501445123432 is 234321544105.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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 31 ways as a sum of consecutive naturals, for example, 79578682 + ... + 79584982.

It is an arithmetic number, because the mean of its divisors is an integer number (8292455190).

Almost surely, 2^501445123432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501445123432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530717132160).

501445123432 is an abundant number, since it is smaller than the sum of its proper divisors (559989140888).

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

501445123432 is a wasteful number, since it uses less digits than its factorization.

501445123432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6635 (or 6631 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 501445123432 its reverse (234321544105), we get a palindrome (735766667537).

The spelling of 501445123432 in words is "five hundred one billion, four hundred forty-five million, one hundred twenty-three thousand, four hundred thirty-two".