631863145892 has 24 divisors (see below), whose sum is σ = 1214962502880. Its totient is φ = 285144255360.

The previous prime is 631863145871. The next prime is 631863145913. The reversal of 631863145892 is 298541368136.

It is an interprime number because it is at equal distance from previous prime (631863145871) and next prime (631863145913).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51650453 + ... + 51662684.

It is an arithmetic number, because the mean of its divisors is an integer number (50623437620).

Almost surely, 2^631863145892 is an apocalyptic number.

It is an amenable number.

631863145892 is a deficient number, since it is larger than the sum of its proper divisors (583099356988).

631863145892 is a wasteful number, since it uses less digits than its factorization.

631863145892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103313291 (or 103313289 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 56.

The spelling of 631863145892 in words is "six hundred thirty-one billion, eight hundred sixty-three million, one hundred forty-five thousand, eight hundred ninety-two".