16405040300 has 72 divisors (see below), whose sum is σ = 39006878400. Its totient is φ = 5939099200.

The previous prime is 16405040299. The next prime is 16405040303. The reversal of 16405040300 is 304050461.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16405040303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216851 + ... + 282549.

It is an arithmetic number, because the mean of its divisors is an integer number (541762200).

Almost surely, 2^16405040300 is an apocalyptic number.

16405040300 is a gapful number since it is divisible by the number (10) 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 16405040300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19503439200).

16405040300 is an abundant number, since it is smaller than the sum of its proper divisors (22601838100).

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

16405040300 is a wasteful number, since it uses less digits than its factorization.

16405040300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65951 (or 65944 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 16405040300 its reverse (304050461), we get a palindrome (16709090761).

The spelling of 16405040300 in words is "sixteen billion, four hundred five million, forty thousand, three hundred".