631620263065 has 16 divisors (see below), whose sum is σ = 828757956096. Its totient is φ = 458299296000.

The previous prime is 631620263063. The next prime is 631620263089. The reversal of 631620263065 is 560362026136.

It is not a de Polignac number, because 631620263065 - 2¹ = 631620263063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631620263063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13237161 + ... + 13284790.

It is an arithmetic number, because the mean of its divisors is an integer number (51797372256).

Almost surely, 2^631620263065 is an apocalyptic number.

It is an amenable number.

631620263065 is a deficient number, since it is larger than the sum of its proper divisors (197137693031).

631620263065 is a wasteful number, since it uses less digits than its factorization.

631620263065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26522400.

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 631620263065 in words is "six hundred thirty-one billion, six hundred twenty million, two hundred sixty-three thousand, sixty-five".