36615621785568 has 192 divisors, whose sum is σ = 111054062085120. Its totient is φ = 10346858496000.

The previous prime is 36615621785563. The next prime is 36615621785569. The reversal of 36615621785568 is 86558712651663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36615621785563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62762733 + ... + 63343443.

It is an arithmetic number, because the mean of its divisors is an integer number (578406573360).

Almost surely, 2^{36615621785568} 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 36615621785568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55527031042560).

36615621785568 is an abundant number, since it is smaller than the sum of its proper divisors (74438440299552).

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

36615621785568 is a wasteful number, since it uses less digits than its factorization.

36615621785568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581761 (or 581753 counting only the distinct ones).

The product of its digits is 435456000, while the sum is 69.

The spelling of 36615621785568 in words is "thirty-six trillion, six hundred fifteen billion, six hundred twenty-one million, seven hundred eighty-five thousand, five hundred sixty-eight".