180438783475466 has 16 divisors (see below), whose sum is σ = 277271700713280. Its totient is φ = 88015075405920.

The previous prime is 180438783475463. The next prime is 180438783475477. The reversal of 180438783475466 is 664574387834081.

It is a super-2 number, since 2×180438783475466² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 180438783475393 and 180438783475402.

It is not an unprimeable number, because it can be changed into a prime (180438783475463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46152206 + ... + 49908953.

It is an arithmetic number, because the mean of its divisors is an integer number (17329481294580).

Almost surely, 2^{180438783475466} is an apocalyptic number.

180438783475466 is a deficient number, since it is larger than the sum of its proper divisors (96832917237814).

180438783475466 is a wasteful number, since it uses less digits than its factorization.

180438783475466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96084109.

The product of its (nonzero) digits is 2601123840, while the sum is 74.

The spelling of 180438783475466 in words is "one hundred eighty trillion, four hundred thirty-eight billion, seven hundred eighty-three million, four hundred seventy-five thousand, four hundred sixty-six".