16672224729505 has 32 divisors (see below), whose sum is σ = 20672988408576. Its totient is φ = 12897993533184.

The previous prime is 16672224729469. The next prime is 16672224729547. The reversal of 16672224729505 is 50592742227661.

It is a cyclic number.

It is not a de Polignac number, because 16672224729505 - 2²¹ = 16672222632353 is a prime.

It is a super-2 number, since 2×16672224729505² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16672224729505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290291602 + ... + 290349028.

It is an arithmetic number, because the mean of its divisors is an integer number (646030887768).

Almost surely, 2^{16672224729505} is an apocalyptic number.

It is an amenable number.

16672224729505 is a deficient number, since it is larger than the sum of its proper divisors (4000763679071).

16672224729505 is a wasteful number, since it uses less digits than its factorization.

16672224729505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67033.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 16672224729505 in words is "sixteen trillion, six hundred seventy-two billion, two hundred twenty-four million, seven hundred twenty-nine thousand, five hundred five".