631637473790 has 8 divisors (see below), whose sum is σ = 1136947452840. Its totient is φ = 252654989512.

The previous prime is 631637473787. The next prime is 631637473807. The reversal of 631637473790 is 97374736136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31581873680 + ... + 31581873699.

It is an arithmetic number, because the mean of its divisors is an integer number (142118431605).

Almost surely, 2^631637473790 is an apocalyptic number.

631637473790 is a deficient number, since it is larger than the sum of its proper divisors (505309979050).

631637473790 is a wasteful number, since it uses less digits than its factorization.

631637473790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63163747386.

The product of its (nonzero) digits is 12002256, while the sum is 56.

The spelling of 631637473790 in words is "six hundred thirty-one billion, six hundred thirty-seven million, four hundred seventy-three thousand, seven hundred ninety".