180091861452 has 72 divisors (see below), whose sum is σ = 472951664640. Its totient is φ = 57711763200.

The previous prime is 180091861421. The next prime is 180091861483. The reversal of 180091861452 is 254168190081.

It is a happy number.

180091861452 is a `hidden beast` number, since 18 + 0 + 0 + 9 + 18 + 614 + 5 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (180091861421) and next prime (180091861483).

It is a super-2 number, since 2×180091861452² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 180091861398 and 180091861407.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 126924 + ... + 613427.

It is an arithmetic number, because the mean of its divisors is an integer number (6568773120).

Almost surely, 2^180091861452 is an apocalyptic number.

180091861452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

180091861452 is an abundant number, since it is smaller than the sum of its proper divisors (292859803188).

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

180091861452 is a wasteful number, since it uses less digits than its factorization.

180091861452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740623 (or 740618 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 180091861452 in words is "one hundred eighty billion, ninety-one million, eight hundred sixty-one thousand, four hundred fifty-two".