180381310551 has 12 divisors (see below), whose sum is σ = 280593149928. Its totient is φ = 111003883344.

The previous prime is 180381310547. The next prime is 180381310573. The reversal of 180381310551 is 155013183081.

180381310551 is a `hidden beast` number, since 1 + 80 + 3 + 8 + 13 + 10 + 551 = 666.

It is not a de Polignac number, because 180381310551 - 2² = 180381310547 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180381310451) 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 11 ways as a sum of consecutive naturals, for example, 770860185 + ... + 770860418.

It is an arithmetic number, because the mean of its divisors is an integer number (23382762494).

Almost surely, 2^180381310551 is an apocalyptic number.

180381310551 is a deficient number, since it is larger than the sum of its proper divisors (100211839377).

180381310551 is a wasteful number, since it uses less digits than its factorization.

180381310551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541720622 (or 1541720619 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The spelling of 180381310551 in words is "one hundred eighty billion, three hundred eighty-one million, three hundred ten thousand, five hundred fifty-one".