665660480112 has 40 divisors (see below), whose sum is σ = 1910692120080. Its totient is φ = 221886826560.

The previous prime is 665660480057. The next prime is 665660480113. The reversal of 665660480112 is 211084066566.

665660480112 is a `hidden beast` number, since 6 + 6 + 56 + 6 + 0 + 480 + 112 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665660480113) 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, 770439939 + ... + 770440802.

It is an arithmetic number, because the mean of its divisors is an integer number (47767303002).

Almost surely, 2^665660480112 is an apocalyptic number.

It is an amenable number.

665660480112 is an abundant number, since it is smaller than the sum of its proper divisors (1245031639968).

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

665660480112 is a wasteful number, since it uses less digits than its factorization.

665660480112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540880758 (or 1540880746 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 665660480112 in words is "six hundred sixty-five billion, six hundred sixty million, four hundred eighty thousand, one hundred twelve".