662080048181 has 4 divisors (see below), whose sum is σ = 684910394700. Its totient is φ = 639249701664.

The previous prime is 662080048177. The next prime is 662080048187. The reversal of 662080048181 is 181840080266.

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 171057515281 + 491022532900 = 413591^2 + 700730^2 .

It is a cyclic number.

It is not a de Polignac number, because 662080048181 - 2² = 662080048177 is a prime.

It is a super-2 number, since 2×662080048181² (a number of 24 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 (662080048187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11415173216 + ... + 11415173273.

It is an arithmetic number, because the mean of its divisors is an integer number (171227598675).

Almost surely, 2^662080048181 is an apocalyptic number.

It is an amenable number.

662080048181 is a deficient number, since it is larger than the sum of its proper divisors (22830346519).

662080048181 is a wasteful number, since it uses less digits than its factorization.

662080048181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22830346518.

The product of its (nonzero) digits is 147456, while the sum is 44.

The spelling of 662080048181 in words is "six hundred sixty-two billion, eighty million, forty-eight thousand, one hundred eighty-one".