16891226792605 has 32 divisors (see below), whose sum is σ = 22626924300288. Its totient is φ = 11998557211200.

The previous prime is 16891226792567. The next prime is 16891226792617. The reversal of 16891226792605 is 50629762219861.

It is not a de Polignac number, because 16891226792605 - 2³⁷ = 16753787839133 is a prime.

It is a congruent number.

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, 186295392 + ... + 186386038.

It is an arithmetic number, because the mean of its divisors is an integer number (707091384384).

Almost surely, 2^{16891226792605} is an apocalyptic number.

It is an amenable number.

16891226792605 is a deficient number, since it is larger than the sum of its proper divisors (5735697507683).

16891226792605 is a wasteful number, since it uses less digits than its factorization.

16891226792605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169497.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 16891226792605 in words is "sixteen trillion, eight hundred ninety-one billion, two hundred twenty-six million, seven hundred ninety-two thousand, six hundred five".