180734005399 has 4 divisors (see below), whose sum is σ = 181743692760. Its totient is φ = 179724318040.

The previous prime is 180734005373. The next prime is 180734005409. The reversal of 180734005399 is 993500437081.

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

It is a cyclic number.

It is not a de Polignac number, because 180734005399 - 2¹⁹ = 180733481111 is a prime.

It is a super-2 number, since 2×180734005399² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180734009399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504843412 + ... + 504843769.

It is an arithmetic number, because the mean of its divisors is an integer number (45435923190).

Almost surely, 2^180734005399 is an apocalyptic number.

180734005399 is a deficient number, since it is larger than the sum of its proper divisors (1009687361).

180734005399 is a wasteful number, since it uses less digits than its factorization.

180734005399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009687360.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 180734005399 in words is "one hundred eighty billion, seven hundred thirty-four million, five thousand, three hundred ninety-nine".