545440431432 has 128 divisors (see below), whose sum is σ = 1546178659200. Its totient is φ = 158954047488.

The previous prime is 545440431409. The next prime is 545440431433. The reversal of 545440431432 is 234134044545.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (545440431433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29257218 + ... + 29275854.

It is an arithmetic number, because the mean of its divisors is an integer number (12079520775).

Almost surely, 2^545440431432 is an apocalyptic number.

545440431432 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545440431432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (773089329600).

545440431432 is an abundant number, since it is smaller than the sum of its proper divisors (1000738227768).

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

545440431432 is a wasteful number, since it uses less digits than its factorization.

545440431432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23615 (or 23611 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 39.

Adding to 545440431432 its reverse (234134044545), we get a palindrome (779574475977).

The spelling of 545440431432 in words is "five hundred forty-five billion, four hundred forty million, four hundred thirty-one thousand, four hundred thirty-two".