1631648206636 has 48 divisors (see below), whose sum is σ = 3315953088000. Its totient is φ = 688019131008.

The previous prime is 1631648206621. The next prime is 1631648206679. The reversal of 1631648206636 is 6366028461361.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055640 + ... + 2092288.

It is an arithmetic number, because the mean of its divisors is an integer number (69082356000).

Almost surely, 2^{1631648206636} is an apocalyptic number.

It is an amenable number.

1631648206636 is an abundant number, since it is smaller than the sum of its proper divisors (1684304881364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1631648206636 is a wasteful number, since it uses less digits than its factorization.

1631648206636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037566 (or 1037564 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 1631648206636 in words is "one trillion, six hundred thirty-one billion, six hundred forty-eight million, two hundred six thousand, six hundred thirty-six".