3636700784064 has 252 divisors, whose sum is σ = 10834326921600. Its totient is φ = 1211112870912.

The previous prime is 3636700784053. The next prime is 3636700784081. The reversal of 3636700784064 is 4604870076363.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 3636700784064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 541252897 + ... + 541259615.

It is an arithmetic number, because the mean of its divisors is an integer number (42993360800).

Almost surely, 2^{3636700784064} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3636700784064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5417163460800).

3636700784064 is an abundant number, since it is smaller than the sum of its proper divisors (7197626137536).

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

3636700784064 is an frugal number, since it uses more digits than its factorization.

3636700784064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8044 (or 8013 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 54.

The spelling of 3636700784064 in words is "three trillion, six hundred thirty-six billion, seven hundred million, seven hundred eighty-four thousand, sixty-four".