16564400140 has 12 divisors (see below), whose sum is σ = 34785240336. Its totient is φ = 6625760048.

The previous prime is 16564400137. The next prime is 16564400141. The reversal of 16564400140 is 4100446561.

It is not an unprimeable number, because it can be changed into a prime (16564400141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414109984 + ... + 414110023.

It is an arithmetic number, because the mean of its divisors is an integer number (2898770028).

Almost surely, 2^16564400140 is an apocalyptic number.

16564400140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16564400140 is an abundant number, since it is smaller than the sum of its proper divisors (18220840196).

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

16564400140 is a wasteful number, since it uses less digits than its factorization.

16564400140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828220016 (or 828220014 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 16564400140 in words is "sixteen billion, five hundred sixty-four million, four hundred thousand, one hundred forty".