36673436781 has 24 divisors (see below), whose sum is σ = 53104611456. Its totient is φ = 24388176960.

The previous prime is 36673436771. The next prime is 36673436791. The reversal of 36673436781 is 18763437663.

36673436781 is a `hidden beast` number, since 3 + 66 + 73 + 436 + 7 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (36673436771) and next prime (36673436791).

It is not a de Polignac number, because 36673436781 - 2²¹ = 36671339629 is a prime.

It is a super-2 number, since 2×36673436781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36673436771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7416796 + ... + 7421738.

It is an arithmetic number, because the mean of its divisors is an integer number (2212692144).

Almost surely, 2^36673436781 is an apocalyptic number.

It is an amenable number.

36673436781 is a deficient number, since it is larger than the sum of its proper divisors (16431174675).

36673436781 is a wasteful number, since it uses less digits than its factorization.

36673436781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6833 (or 6830 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

The spelling of 36673436781 in words is "thirty-six billion, six hundred seventy-three million, four hundred thirty-six thousand, seven hundred eighty-one".