16564321272050 has 24 divisors (see below), whose sum is σ = 31044825651312. Its totient is φ = 6575150426000.

The previous prime is 16564321272049. The next prime is 16564321272113. The reversal of 16564321272050 is 5027212346561.

It is a super-2 number, since 2×16564321272050² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16564321271992 and 16564321272010.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1264445456 + ... + 1264458555.

It is an arithmetic number, because the mean of its divisors is an integer number (1293534402138).

Almost surely, 2^{16564321272050} is an apocalyptic number.

16564321272050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16564321272050 is a deficient number, since it is larger than the sum of its proper divisors (14480504379262).

16564321272050 is a wasteful number, since it uses less digits than its factorization.

16564321272050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528904154 (or 2528904149 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 16564321272050 in words is "sixteen trillion, five hundred sixty-four billion, three hundred twenty-one million, two hundred seventy-two thousand, fifty".