16436625440 has 96 divisors (see below), whose sum is σ = 42227229744. Its totient is φ = 6020628480.

The previous prime is 16436625433. The next prime is 16436625451. The reversal of 16436625440 is 4452663461.

It can be written as a sum of positive squares in 8 ways, for example, as 10193729296 + 6242896144 = 100964^2 + 79012^2 .

It is a hoax number, since the sum of its digits (41) 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18980 + ... + 182300.

Almost surely, 2^16436625440 is an apocalyptic number.

16436625440 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 16436625440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21113614872).

16436625440 is an abundant number, since it is smaller than the sum of its proper divisors (25790604304).

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

16436625440 is a wasteful number, since it uses less digits than its factorization.

16436625440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163390 (or 163382 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 16436625440 in words is "sixteen billion, four hundred thirty-six million, six hundred twenty-five thousand, four hundred forty".