16769876781 has 32 divisors (see below), whose sum is σ = 26256820480. Its totient is φ = 9319504896.

The previous prime is 16769876713. The next prime is 16769876789. The reversal of 16769876781 is 18767896761.

It is not a de Polignac number, because 16769876781 - 2¹⁰ = 16769875757 is a prime.

It is a super-2 number, since 2×16769876781² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16769876789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2496255 + ... + 2502963.

It is an arithmetic number, because the mean of its divisors is an integer number (820525640).

Almost surely, 2^16769876781 is an apocalyptic number.

It is an amenable number.

16769876781 is a deficient number, since it is larger than the sum of its proper divisors (9486943699).

16769876781 is a wasteful number, since it uses less digits than its factorization.

16769876781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973.

The product of its digits is 42674688, while the sum is 66.

The spelling of 16769876781 in words is "sixteen billion, seven hundred sixty-nine million, eight hundred seventy-six thousand, seven hundred eighty-one".