16021440479 has 6 divisors (see below), whose sum is σ = 17610343800. Its totient is φ = 14564945780.

The previous prime is 16021440443. The next prime is 16021440493. The reversal of 16021440479 is 97404412061.

It is not a de Polignac number, because 16021440479 - 2⁸ = 16021440223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16021440979) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66204179 + ... + 66204420.

It is an arithmetic number, because the mean of its divisors is an integer number (2935057300).

Almost surely, 2^16021440479 is an apocalyptic number.

16021440479 is a deficient number, since it is larger than the sum of its proper divisors (1588903321).

16021440479 is a wasteful number, since it uses less digits than its factorization.

16021440479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132408621 (or 132408610 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 16021440479 in words is "sixteen billion, twenty-one million, four hundred forty thousand, four hundred seventy-nine".