660205132563452 has 36 divisors (see below), whose sum is σ = 1372584530941344. Its totient is φ = 276924949217280.

The previous prime is 660205132563433. The next prime is 660205132563469. The reversal of 660205132563452 is 254365231502066.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 660205132563452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35833964549 + ... + 35833982972.

It is an arithmetic number, because the mean of its divisors is an integer number (38127348081704).

Almost surely, 2^{660205132563452} is an apocalyptic number.

It is an amenable number.

660205132563452 is an abundant number, since it is smaller than the sum of its proper divisors (712379398377892).

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

660205132563452 is a wasteful number, since it uses less digits than its factorization.

660205132563452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71667947586 (or 71667947577 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 50.

The spelling of 660205132563452 in words is "six hundred sixty trillion, two hundred five billion, one hundred thirty-two million, five hundred sixty-three thousand, four hundred fifty-two".