180143857555 has 4 divisors (see below), whose sum is σ = 216172629072. Its totient is φ = 144115086040.

The previous prime is 180143857493. The next prime is 180143857583. The reversal of 180143857555 is 555758341081.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 180143857555 - 2¹³ = 180143849363 is a prime.

It is a super-2 number, since 2×180143857555² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18014385751 + ... + 18014385760.

It is an arithmetic number, because the mean of its divisors is an integer number (54043157268).

Almost surely, 2^180143857555 is an apocalyptic number.

180143857555 is a deficient number, since it is larger than the sum of its proper divisors (36028771517).

180143857555 is an equidigital number, since it uses as much as digits as its factorization.

180143857555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36028771516.

The product of its (nonzero) digits is 3360000, while the sum is 52.

The spelling of 180143857555 in words is "one hundred eighty billion, one hundred forty-three million, eight hundred fifty-seven thousand, five hundred fifty-five".