180916776612 has 576 divisors, whose sum is σ = 581564325888. Its totient is φ = 48832502400.

The previous prime is 180916776589. The next prime is 180916776613. The reversal of 180916776612 is 216677619081.

180916776612 is a `hidden beast` number, since 1 + 8 + 0 + 9 + 16 + 7 + 7 + 6 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180916776613) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 521373823 + ... + 521374169.

It is an arithmetic number, because the mean of its divisors is an integer number (1009660288).

Almost surely, 2^180916776612 is an apocalyptic number.

180916776612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180916776612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290782162944).

180916776612 is an abundant number, since it is smaller than the sum of its proper divisors (400647549276).

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

180916776612 is a wasteful number, since it uses less digits than its factorization.

180916776612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 180916776612 in words is "one hundred eighty billion, nine hundred sixteen million, seven hundred seventy-six thousand, six hundred twelve".