631671040000 has 1920 divisors, whose sum is σ = 2321122003200. Its totient is φ = 165150720000.

The previous prime is 631671039943. The next prime is 631671040001. The reversal of 631671040000 is 40176136.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (631671040001) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 21781759986 + ... + 21781760014.

It is an arithmetic number, because the mean of its divisors is an integer number (1208917710).

Almost surely, 2^631671040000 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 631671040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160561001600).

631671040000 is an abundant number, since it is smaller than the sum of its proper divisors (1689450963200).

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

631671040000 is a wasteful number, since it uses less digits than its factorization.

631671040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 631671040000 in words is "six hundred thirty-one billion, six hundred seventy-one million, forty thousand".