60660605551663 has 16 divisors (see below), whose sum is σ = 70366040672256. Its totient is φ = 51832128157920.

The previous prime is 60660605551661. The next prime is 60660605551669. The reversal of 60660605551663 is 36615550606606.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 60660605551663 - 2¹ = 60660605551661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60660605551661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3272221045 + ... + 3272239582.

It is an arithmetic number, because the mean of its divisors is an integer number (4397877542016).

Almost surely, 2^{60660605551663} is an apocalyptic number.

60660605551663 is a deficient number, since it is larger than the sum of its proper divisors (9705435120593).

60660605551663 is a wasteful number, since it uses less digits than its factorization.

60660605551663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544460694.

The product of its (nonzero) digits is 17496000, while the sum is 55.

The spelling of 60660605551663 in words is "sixty trillion, six hundred sixty billion, six hundred five million, five hundred fifty-one thousand, six hundred sixty-three".