16761361881 has 16 divisors (see below), whose sum is σ = 24714141120. Its totient is φ = 10019243520.

The previous prime is 16761361867. The next prime is 16761361921. The reversal of 16761361881 is 18816316761.

It is not a de Polignac number, because 16761361881 - 2¹⁰ = 16761360857 is a prime.

It is a super-2 number, since 2×16761361881² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16761361881.

It is not an unprimeable number, because it can be changed into a prime (16761361801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3476496 + ... + 3481313.

It is an arithmetic number, because the mean of its divisors is an integer number (1544633820).

Almost surely, 2^16761361881 is an apocalyptic number.

16761361881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16761361881 is a deficient number, since it is larger than the sum of its proper divisors (7952779239).

16761361881 is a wasteful number, since it uses less digits than its factorization.

16761361881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6957896.

The product of its digits is 290304, while the sum is 48.

The spelling of 16761361881 in words is "sixteen billion, seven hundred sixty-one million, three hundred sixty-one thousand, eight hundred eighty-one".