16564031450 has 24 divisors (see below), whose sum is σ = 31268942112. Its totient is φ = 6526721520.

The previous prime is 16564031401. The next prime is 16564031453. The reversal of 16564031450 is 5413046561.

It is a self number, because there is not a number n which added to its sum of digits gives 16564031450.

It is not an unprimeable number, because it can be changed into a prime (16564031453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2468894 + ... + 2475593.

It is an arithmetic number, because the mean of its divisors is an integer number (1302872588).

Almost surely, 2^16564031450 is an apocalyptic number.

16564031450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16564031450 is a deficient number, since it is larger than the sum of its proper divisors (14704910662).

16564031450 is a wasteful number, since it uses less digits than its factorization.

16564031450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4944566 (or 4944561 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 16564031450 in words is "sixteen billion, five hundred sixty-four million, thirty-one thousand, four hundred fifty".