16772254554638 has 16 divisors (see below), whose sum is σ = 27449632975536. Its totient is φ = 7622606091840.

The previous prime is 16772254554637. The next prime is 16772254554709. The reversal of 16772254554638 is 83645545227761.

It is a super-2 number, since 2×16772254554638² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16772254554637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57149231 + ... + 57441962.

It is an arithmetic number, because the mean of its divisors is an integer number (1715602060971).

Almost surely, 2^{16772254554638} is an apocalyptic number.

16772254554638 is a deficient number, since it is larger than the sum of its proper divisors (10677378420898).

16772254554638 is a wasteful number, since it uses less digits than its factorization.

16772254554638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114597859.

The product of its digits is 338688000, while the sum is 65.

The spelling of 16772254554638 in words is "sixteen trillion, seven hundred seventy-two billion, two hundred fifty-four million, five hundred fifty-four thousand, six hundred thirty-eight".