1636321645104 has 40 divisors (see below), whose sum is σ = 4229353595712. Its totient is φ = 545158052160.

The previous prime is 1636321645081. The next prime is 1636321645111. The reversal of 1636321645104 is 4015461236361.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8734354 + ... + 8919729.

Almost surely, 2^{1636321645104} is an apocalyptic number.

It is an amenable number.

1636321645104 is an abundant number, since it is smaller than the sum of its proper divisors (2593031950608).

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

1636321645104 is a wasteful number, since it uses less digits than its factorization.

1636321645104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17656025 (or 17656019 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 1636321645104 in words is "one trillion, six hundred thirty-six billion, three hundred twenty-one million, six hundred forty-five thousand, one hundred four".