180420525160417 has 4 divisors (see below), whose sum is σ = 185296755570196. Its totient is φ = 175544294750640.

The previous prime is 180420525160297. The next prime is 180420525160439. The reversal of 180420525160417 is 714061525024081.

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

It can be written as a sum of positive squares in 2 ways, for example, as 90469792656721 + 89950732503696 = 9511561^2 + 9484236^2 .

It is a cyclic number.

It is not a de Polignac number, because 180420525160417 - 2¹¹ = 180420525158369 is a prime.

It is a super-2 number, since 2×180420525160417² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180420525160457) 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, 2438115204834 + ... + 2438115204907.

It is an arithmetic number, because the mean of its divisors is an integer number (46324188892549).

Almost surely, 2^{180420525160417} is an apocalyptic number.

It is an amenable number.

180420525160417 is a deficient number, since it is larger than the sum of its proper divisors (4876230409779).

180420525160417 is an equidigital number, since it uses as much as digits as its factorization.

180420525160417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4876230409778.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 180420525160417 in words is "one hundred eighty trillion, four hundred twenty billion, five hundred twenty-five million, one hundred sixty thousand, four hundred seventeen".