16452469440 has 672 divisors, whose sum is σ = 67372992000. Its totient is φ = 3747594240.

The previous prime is 16452469433. The next prime is 16452469447. The reversal of 16452469440 is 4496425461.

16452469440 is a `hidden beast` number, since 1 + 64 + 524 + 69 + 4 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (16452469433) and next prime (16452469447).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (16452469447) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27466261 + ... + 27466859.

Almost surely, 2^16452469440 is an apocalyptic number.

16452469440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16452469440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33686496000).

16452469440 is an abundant number, since it is smaller than the sum of its proper divisors (50920522560).

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

16452469440 is a wasteful number, since it uses less digits than its factorization.

16452469440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 16452469440 in words is "sixteen billion, four hundred fifty-two million, four hundred sixty-nine thousand, four hundred forty".