1631631657226 has 48 divisors (see below), whose sum is σ = 2756393893656. Its totient is φ = 721312929792.

The previous prime is 1631631657211. The next prime is 1631631657269. The reversal of 1631631657226 is 6227561361361.

It can be written as a sum of positive squares in 12 ways, for example, as 954304303225 + 677327354001 = 976885^2 + 822999^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1631631657226.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286870 + ... + 1829086.

Almost surely, 2^{1631631657226} is an apocalyptic number.

1631631657226 is a deficient number, since it is larger than the sum of its proper divisors (1124762236430).

1631631657226 is a wasteful number, since it uses less digits than its factorization.

1631631657226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542331 (or 1542302 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 49.

The spelling of 1631631657226 in words is "one trillion, six hundred thirty-one billion, six hundred thirty-one million, six hundred fifty-seven thousand, two hundred twenty-six".