16452632440 has 64 divisors (see below), whose sum is σ = 37417528800. Its totient is φ = 6510279168.

The previous prime is 16452632401. The next prime is 16452632447. The reversal of 16452632440 is 4423625461.

It is a super-2 number, since 2×16452632440² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16452632440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16452632447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3545802 + ... + 3550438.

Almost surely, 2^16452632440 is an apocalyptic number.

16452632440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16452632440 is an abundant number, since it is smaller than the sum of its proper divisors (20964896360).

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

16452632440 is a wasteful number, since it uses less digits than its factorization.

16452632440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5584 (or 5580 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 16452632440 in words is "sixteen billion, four hundred fifty-two million, six hundred thirty-two thousand, four hundred forty".