16388475140 has 24 divisors (see below), whose sum is σ = 34426024920. Its totient is φ = 6553442048.

The previous prime is 16388475139. The next prime is 16388475143. The reversal of 16388475140 is 4157488361.

It can be written as a sum of positive squares in 4 ways, for example, as 2157416704 + 14231058436 = 46448^2 + 119294^2 .

It is not an unprimeable number, because it can be changed into a prime (16388475143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51785 + ... + 188304.

It is an arithmetic number, because the mean of its divisors is an integer number (1434417705).

Almost surely, 2^16388475140 is an apocalyptic number.

16388475140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16388475140 is an abundant number, since it is smaller than the sum of its proper divisors (18037549780).

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

16388475140 is a wasteful number, since it uses less digits than its factorization.

16388475140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243511 (or 243509 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 16388475140 in words is "sixteen billion, three hundred eighty-eight million, four hundred seventy-five thousand, one hundred forty".