16261777105 has 16 divisors (see below), whose sum is σ = 23021282304. Its totient is φ = 10791224640.

The previous prime is 16261777073. The next prime is 16261777123. The reversal of 16261777105 is 50177716261.

It is not a de Polignac number, because 16261777105 - 2⁵ = 16261777073 is a prime.

It is a super-2 number, since 2×16261777105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7492822 + ... + 7494991.

It is an arithmetic number, because the mean of its divisors is an integer number (1438830144).

Almost surely, 2^16261777105 is an apocalyptic number.

It is an amenable number.

16261777105 is a deficient number, since it is larger than the sum of its proper divisors (6759505199).

16261777105 is a wasteful number, since it uses less digits than its factorization.

16261777105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14987856.

The product of its (nonzero) digits is 123480, while the sum is 43.

The spelling of 16261777105 in words is "sixteen billion, two hundred sixty-one million, seven hundred seventy-seven thousand, one hundred five".