16640072752 has 40 divisors (see below), whose sum is σ = 34551154656.
Its totient is φ = 7743200256.
The previous prime is 16640072741. The next prime is 16640072759. The reversal of 16640072752 is 25727004661.
It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.
It is not an unprimeable number, because it can be changed into a prime (16640072759) 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, 597433 + ... + 624664.
Almost surely, 216640072752 is an apocalyptic number.
It is an amenable number.
16640072752 is an abundant number, since it is smaller than the sum of its proper divisors (17911081904).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
16640072752 is a wasteful number, since it uses less digits than its factorization.
16640072752 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1222165 (or 1222159 counting only the distinct ones).
The product of its (nonzero) digits is 141120, while the sum is 40.
The spelling of 16640072752 in words is "sixteen billion, six hundred forty million, seventy-two thousand, seven hundred fifty-two".