1205813685632 has 64 divisors (see below), whose sum is σ = 2506980520800. Its totient is φ = 576617631744.

The previous prime is 1205813685631. The next prime is 1205813685697. The reversal of 1205813685632 is 2365863185021.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205813685631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26935844 + ... + 26980572.

Almost surely, 2^{1205813685632} is an apocalyptic number.

It is an amenable number.

1205813685632 is an abundant number, since it is smaller than the sum of its proper divisors (1301166835168).

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

1205813685632 is an equidigital number, since it uses as much as digits as its factorization.

1205813685632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53923 (or 53911 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 1205813685632 in words is "one trillion, two hundred five billion, eight hundred thirteen million, six hundred eighty-five thousand, six hundred thirty-two".