133501161636 has 96 divisors (see below), whose sum is σ = 382407540480. Its totient is φ = 40061716992.

The previous prime is 133501161589. The next prime is 133501161641. The reversal of 133501161636 is 636161105331.

133501161636 is a `hidden beast` number, since 1 + 3 + 3 + 5 + 0 + 1 + 1 + 616 + 36 = 666.

It is a super-2 number, since 2×133501161636² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 133501161636.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1538491 + ... + 1622946.

It is an arithmetic number, because the mean of its divisors is an integer number (3983411880).

Almost surely, 2^133501161636 is an apocalyptic number.

It is an amenable number.

133501161636 is an abundant number, since it is smaller than the sum of its proper divisors (248906378844).

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

133501161636 is a wasteful number, since it uses less digits than its factorization.

133501161636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161490 (or 3161482 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

Adding to 133501161636 its reverse (636161105331), we get a palindrome (769662266967).

The spelling of 133501161636 in words is "one hundred thirty-three billion, five hundred one million, one hundred sixty-one thousand, six hundred thirty-six".