181716954012 has 96 divisors (see below), whose sum is σ = 514077096960. Its totient is φ = 55051799040.

The previous prime is 181716954011. The next prime is 181716954019. The reversal of 181716954012 is 210459617181.

181716954012 is a `hidden beast` number, since 1 + 81 + 7 + 16 + 9 + 540 + 12 = 666.

It is a super-2 number, since 2×181716954012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181716954011) 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, 5284908 + ... + 5319180.

It is an arithmetic number, because the mean of its divisors is an integer number (5354969760).

Almost surely, 2^181716954012 is an apocalyptic number.

181716954012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

181716954012 is an abundant number, since it is smaller than the sum of its proper divisors (332360142948).

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

181716954012 is a wasteful number, since it uses less digits than its factorization.

181716954012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38760 (or 38752 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The spelling of 181716954012 in words is "one hundred eighty-one billion, seven hundred sixteen million, nine hundred fifty-four thousand, twelve".