16777221134085 has 48 divisors (see below), whose sum is σ = 29103572429568. Its totient is φ = 8940758803200.

The previous prime is 16777221134081. The next prime is 16777221134087. The reversal of 16777221134085 is 58043112277761.

16777221134085 is a `hidden beast` number, since 1 + 6 + 7 + 7 + 7 + 2 + 211 + 340 + 85 = 666.

It is not a de Polignac number, because 16777221134085 - 2² = 16777221134081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16777221134081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 842516089 + ... + 842536001.

It is an arithmetic number, because the mean of its divisors is an integer number (606324425616).

Almost surely, 2^{16777221134085} is an apocalyptic number.

16777221134085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16777221134085 is a deficient number, since it is larger than the sum of its proper divisors (12326351295483).

16777221134085 is a wasteful number, since it uses less digits than its factorization.

16777221134085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33826 (or 33823 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 16777221134085 in words is "sixteen trillion, seven hundred seventy-seven billion, two hundred twenty-one million, one hundred thirty-four thousand, eighty-five".