1636411215372 has 12 divisors (see below), whose sum is σ = 3818292835896. Its totient is φ = 545470405120.

The previous prime is 1636411215367. The next prime is 1636411215379. The reversal of 1636411215372 is 2735121146361.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1636411215379) 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 3 ways as a sum of consecutive naturals, for example, 68183800629 + ... + 68183800652.

It is an arithmetic number, because the mean of its divisors is an integer number (318191069658).

Almost surely, 2^{1636411215372} is an apocalyptic number.

1636411215372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1636411215372 is an abundant number, since it is smaller than the sum of its proper divisors (2181881620524).

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

1636411215372 is a wasteful number, since it uses less digits than its factorization.

1636411215372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136367601288 (or 136367601286 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The spelling of 1636411215372 in words is "one trillion, six hundred thirty-six billion, four hundred eleven million, two hundred fifteen thousand, three hundred seventy-two".