16000640403 has 8 divisors (see below), whose sum is σ = 23273658816. Its totient is φ = 9697357800.

The previous prime is 16000640401. The next prime is 16000640413. The reversal of 16000640403 is 30404600061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16000640403 - 2¹ = 16000640401 is a prime.

It is a super-2 number, since 2×16000640403² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16000640401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242433913 + ... + 242433978.

It is an arithmetic number, because the mean of its divisors is an integer number (2909207352).

Almost surely, 2^16000640403 is an apocalyptic number.

16000640403 is a deficient number, since it is larger than the sum of its proper divisors (7273018413).

16000640403 is a wasteful number, since it uses less digits than its factorization.

16000640403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484867905.

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 16000640403 in words is "sixteen billion, six hundred forty thousand, four hundred three".