665550066552 has 64 divisors (see below), whose sum is σ = 1907020416000. Its totient is φ = 189612282240.

The previous prime is 665550066541. The next prime is 665550066563. The reversal of 665550066552 is 255660055566.

665550066552 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (665550066541) and next prime (665550066563).

It is a junction number, because it is equal to n+sod(n) for n = 665550066495 and 665550066504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5617024 + ... + 5734287.

It is an arithmetic number, because the mean of its divisors is an integer number (29797194000).

Almost surely, 2^665550066552 is an apocalyptic number.

It is an amenable number.

665550066552 is an abundant number, since it is smaller than the sum of its proper divisors (1241470349448).

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

665550066552 is a wasteful number, since it uses less digits than its factorization.

665550066552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11351676 (or 11351672 counting only the distinct ones).

The product of its (nonzero) digits is 8100000, while the sum is 51.

The spelling of 665550066552 in words is "six hundred sixty-five billion, five hundred fifty million, sixty-six thousand, five hundred fifty-two".