180463687993 has 4 divisors (see below), whose sum is σ = 180490714240. Its totient is φ = 180436661748.

The previous prime is 180463687913. The next prime is 180463688059. The reversal of 180463687993 is 399786364081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 180463687993 - 2¹³ = 180463679801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180463687913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13503105 + ... + 13516462.

It is an arithmetic number, because the mean of its divisors is an integer number (45122678560).

Almost surely, 2^180463687993 is an apocalyptic number.

It is an amenable number.

180463687993 is a deficient number, since it is larger than the sum of its proper divisors (27026247).

180463687993 is an equidigital number, since it uses as much as digits as its factorization.

180463687993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27026246.

The product of its (nonzero) digits is 47029248, while the sum is 64.

The spelling of 180463687993 in words is "one hundred eighty billion, four hundred sixty-three million, six hundred eighty-seven thousand, nine hundred ninety-three".