631716661299 has 8 divisors (see below), whose sum is σ = 842294032272. Its totient is φ = 421141865600.

The previous prime is 631716661271. The next prime is 631716661349. The reversal of 631716661299 is 992166617136.

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

It is a cyclic number.

It is not a de Polignac number, because 631716661299 - 2³⁷ = 494277707827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631716661229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28999 + ... + 1124399.

It is an arithmetic number, because the mean of its divisors is an integer number (105286754034).

Almost surely, 2^631716661299 is an apocalyptic number.

631716661299 is a deficient number, since it is larger than the sum of its proper divisors (210577370973).

631716661299 is a wasteful number, since it uses less digits than its factorization.

631716661299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287637.

The product of its digits is 4408992, while the sum is 57.

The spelling of 631716661299 in words is "six hundred thirty-one billion, seven hundred sixteen million, six hundred sixty-one thousand, two hundred ninety-nine".