1636141206656 has 32 divisors (see below), whose sum is σ = 3555818250480. Its totient is φ = 743700547840.

The previous prime is 1636141206619. The next prime is 1636141206659. The reversal of 1636141206656 is 6566021416361.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1636141206656.

It is not an unprimeable number, because it can be changed into a prime (1636141206659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581014646 + ... + 581017461.

Almost surely, 2^{1636141206656} is an apocalyptic number.

1636141206656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1636141206656 is an abundant number, since it is smaller than the sum of its proper divisors (1919677043824).

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

1636141206656 is a wasteful number, since it uses less digits than its factorization.

1636141206656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162032132 (or 1162032120 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 1636141206656 in words is "one trillion, six hundred thirty-six billion, one hundred forty-one million, two hundred six thousand, six hundred fifty-six".