16780768846831 has 16 divisors (see below), whose sum is σ = 18563342694048. Its totient is φ = 15041177971200.

The previous prime is 16780768846781. The next prime is 16780768846841. The reversal of 16780768846831 is 13864886708761.

It is a cyclic number.

It is not a de Polignac number, because 16780768846831 - 2²⁹ = 16780231975919 is a prime.

It is a super-2 number, since 2×16780768846831² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (73).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16780768846841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1159110 + ... + 5908051.

It is an arithmetic number, because the mean of its divisors is an integer number (1160208918378).

Almost surely, 2^{16780768846831} is an apocalyptic number.

16780768846831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16780768846831 is a deficient number, since it is larger than the sum of its proper divisors (1782573847217).

16780768846831 is a wasteful number, since it uses less digits than its factorization.

16780768846831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7070202.

The product of its (nonzero) digits is 520224768, while the sum is 73.

The spelling of 16780768846831 in words is "sixteen trillion, seven hundred eighty billion, seven hundred sixty-eight million, eight hundred forty-six thousand, eight hundred thirty-one".