16440073794 has 20 divisors (see below), whose sum is σ = 36837943494. Its totient is φ = 5480024544.

The previous prime is 16440073787. The next prime is 16440073799. The reversal of 16440073794 is 49737004461.

It can be written as a sum of positive squares in only one way, i.e., 9195851025 + 7244222769 = 95895^2 + 85113^2 .

It is a super-3 number, since 3×16440073794³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16440073799) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50740807 + ... + 50741130.

Almost surely, 2^16440073794 is an apocalyptic number.

16440073794 is an abundant number, since it is smaller than the sum of its proper divisors (20397869700).

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

16440073794 is a wasteful number, since it uses less digits than its factorization.

16440073794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101481951 (or 101481942 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 16440073794 in words is "sixteen billion, four hundred forty million, seventy-three thousand, seven hundred ninety-four".