630691510079 has 2 divisors, whose sum is σ = 630691510080. Its totient is φ = 630691510078.

The previous prime is 630691509971. The next prime is 630691510091. The reversal of 630691510079 is 970015196036.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630691510079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630691510279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315345755039 + 315345755040.

It is an arithmetic number, because the mean of its divisors is an integer number (315345755040).

Almost surely, 2^630691510079 is an apocalyptic number.

630691510079 is a deficient number, since it is larger than the sum of its proper divisors (1).

630691510079 is an equidigital number, since it uses as much as digits as its factorization.

630691510079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 47.

The spelling of 630691510079 in words is "six hundred thirty billion, six hundred ninety-one million, five hundred ten thousand, seventy-nine".