665470028192 has 48 divisors (see below), whose sum is σ = 1402798166280. Its totient is φ = 309643665408.

The previous prime is 665470028191. The next prime is 665470028219. The reversal of 665470028192 is 291820074566.

It can be written as a sum of positive squares in 4 ways, for example, as 323811073936 + 341658954256 = 569044^2 + 584516^2 .

It is a super-2 number, since 2×665470028192² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 665470028192.

It is not an unprimeable number, because it can be changed into a prime (665470028191) 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, 6824003 + ... + 6920834.

Almost surely, 2^665470028192 is an apocalyptic number.

It is an amenable number.

665470028192 is an abundant number, since it is smaller than the sum of its proper divisors (737328138088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665470028192 is a wasteful number, since it uses less digits than its factorization.

665470028192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13744953 (or 13744945 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 665470028192 in words is "six hundred sixty-five billion, four hundred seventy million, twenty-eight thousand, one hundred ninety-two".