20836537232976 has 30 divisors (see below), whose sum is σ = 58313364617690. Its totient is φ = 6945512410944.

The previous prime is 20836537232957. The next prime is 20836537232977. The reversal of 20836537232976 is 67923273563802.

It is a happy number.

20836537232976 is a `hidden beast` number, since 2 + 0 + 8 + 3 + 6 + 537 + 2 + 3 + 2 + 97 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12493821315600 + 8342715917376 = 3534660^2 + 2888376^2 .

It is a super-2 number, since 2×20836537232976² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20836537232977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72349087471 + ... + 72349087758.

Almost surely, 2^{20836537232976} is an apocalyptic number.

It is an amenable number.

20836537232976 is an abundant number, since it is smaller than the sum of its proper divisors (37476827384714).

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

20836537232976 is a wasteful number, since it uses less digits than its factorization.

20836537232976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144698175243 (or 144698175234 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 63.

The spelling of 20836537232976 in words is "twenty trillion, eight hundred thirty-six billion, five hundred thirty-seven million, two hundred thirty-two thousand, nine hundred seventy-six".