631594748479 has 2 divisors, whose sum is σ = 631594748480. Its totient is φ = 631594748478.

The previous prime is 631594748431. The next prime is 631594748501. The reversal of 631594748479 is 974847495136.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631594748479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631294748479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315797374239 + 315797374240.

It is an arithmetic number, because the mean of its divisors is an integer number (315797374240).

Almost surely, 2^631594748479 is an apocalyptic number.

631594748479 is a deficient number, since it is larger than the sum of its proper divisors (1).

631594748479 is an equidigital number, since it uses as much as digits as its factorization.

631594748479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182891520, while the sum is 67.

The spelling of 631594748479 in words is "six hundred thirty-one billion, five hundred ninety-four million, seven hundred forty-eight thousand, four hundred seventy-nine".