631353062064 has 80 divisors (see below), whose sum is σ = 1677150735840. Its totient is φ = 204509583360.

The previous prime is 631353062033. The next prime is 631353062069. The reversal of 631353062064 is 460260353136.

It is not an unprimeable number, because it can be changed into a prime (631353062069) 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, 1217074 + ... + 1656494.

It is an arithmetic number, because the mean of its divisors is an integer number (20964384198).

Almost surely, 2^631353062064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631353062064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (838575367920).

631353062064 is an abundant number, since it is smaller than the sum of its proper divisors (1045797673776).

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

631353062064 is a wasteful number, since it uses less digits than its factorization.

631353062064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440278 (or 440272 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 631353062064 in words is "six hundred thirty-one billion, three hundred fifty-three million, sixty-two thousand, sixty-four".