663534377270 has 16 divisors (see below), whose sum is σ = 1195460667648. Its totient is φ = 265169575680.

The previous prime is 663534377267. The next prime is 663534377279. The reversal of 663534377270 is 72773435366.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663534377279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30510491 + ... + 30532230.

It is an arithmetic number, because the mean of its divisors is an integer number (74716291728).

Almost surely, 2^663534377270 is an apocalyptic number.

663534377270 is a deficient number, since it is larger than the sum of its proper divisors (531926290378).

663534377270 is a wasteful number, since it uses less digits than its factorization.

663534377270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61043815.

The product of its (nonzero) digits is 13335840, while the sum is 53.

The spelling of 663534377270 in words is "six hundred sixty-three billion, five hundred thirty-four million, three hundred seventy-seven thousand, two hundred seventy".