16761946651872 has 48 divisors (see below), whose sum is σ = 45419468355072. Its totient is φ = 5407079564160.

The previous prime is 16761946651867. The next prime is 16761946651873. The reversal of 16761946651872 is 27815664916761.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×16761946651872² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16761946651797 and 16761946651806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16761946651873) 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 7 ways as a sum of consecutive naturals, for example, 2816184298 + ... + 2816190249.

It is an arithmetic number, because the mean of its divisors is an integer number (946238924064).

Almost surely, 2^{16761946651872} is an apocalyptic number.

16761946651872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16761946651872 is an abundant number, since it is smaller than the sum of its proper divisors (28657521703200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16761946651872 is a wasteful number, since it uses less digits than its factorization.

16761946651872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5632374591 (or 5632374583 counting only the distinct ones).

The product of its digits is 182891520, while the sum is 69.

The spelling of 16761946651872 in words is "sixteen trillion, seven hundred sixty-one billion, nine hundred forty-six million, six hundred fifty-one thousand, eight hundred seventy-two".