16388753040 has 360 divisors, whose sum is σ = 63135334080. Its totient is φ = 3799825920.

The previous prime is 16388753033. The next prime is 16388753071. The reversal of 16388753040 is 4035788361.

16388753040 is a `hidden beast` number, since 1 + 6 + 38 + 87 + 530 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a super-2 number, since 2×16388753040² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1999671 + ... + 2007849.

It is an arithmetic number, because the mean of its divisors is an integer number (175375928).

Almost surely, 2^16388753040 is an apocalyptic number.

16388753040 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 16388753040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31567667040).

16388753040 is an abundant number, since it is smaller than the sum of its proper divisors (46746581040).

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

16388753040 is a wasteful number, since it uses less digits than its factorization.

16388753040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8243 (or 8223 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 16388753040 in words is "sixteen billion, three hundred eighty-eight million, seven hundred fifty-three thousand, forty".