36642867786 has 192 divisors, whose sum is σ = 94696243200. Its totient is φ = 10023108480.

The previous prime is 36642867761. The next prime is 36642867797. The reversal of 36642867786 is 68776824663.

36642867786 is a `hidden beast` number, since 3 + 66 + 428 + 6 + 77 + 86 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 117822571 + ... + 117822881.

It is an arithmetic number, because the mean of its divisors is an integer number (493209600).

Almost surely, 2^36642867786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36642867786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47348121600).

36642867786 is an abundant number, since it is smaller than the sum of its proper divisors (58053375414).

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

36642867786 is a wasteful number, since it uses less digits than its factorization.

36642867786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 686 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 63.

The spelling of 36642867786 in words is "thirty-six billion, six hundred forty-two million, eight hundred sixty-seven thousand, seven hundred eighty-six".