16583440305640 has 128 divisors (see below), whose sum is σ = 41997116196000. Its totient is φ = 5851025768448.

The previous prime is 16583440305623. The next prime is 16583440305643. The reversal of 16583440305640 is 4650304438561.

It can be written as a sum of positive squares in 16 ways, for example, as 3809921417604 + 12773518888036 = 1951902^2 + 3574006^2 .

It is not an unprimeable number, because it can be changed into a prime (16583440305643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4205785 + ... + 7131304.

Almost surely, 2^{16583440305640} is an apocalyptic number.

16583440305640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16583440305640 is an abundant number, since it is smaller than the sum of its proper divisors (25413675890360).

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

16583440305640 is a wasteful number, since it uses less digits than its factorization.

16583440305640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11337239 (or 11337235 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 16583440305640 in words is "sixteen trillion, five hundred eighty-three billion, four hundred forty million, three hundred five thousand, six hundred forty".