8136215385536 has 224 divisors, whose sum is σ = 19244700582912. Its totient is φ = 3340685352960.

The previous prime is 8136215385491. The next prime is 8136215385539. The reversal of 8136215385536 is 6355835126318.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×8136215385536² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8136215385539) 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, 254582870 + ... + 254614826.

It is an arithmetic number, because the mean of its divisors is an integer number (85913841888).

Almost surely, 2^{8136215385536} 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 8136215385536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9622350291456).

8136215385536 is an abundant number, since it is smaller than the sum of its proper divisors (11108485197376).

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

8136215385536 is a wasteful number, since it uses less digits than its factorization.

8136215385536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32267 (or 32257 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 56.

The spelling of 8136215385536 in words is "eight trillion, one hundred thirty-six billion, two hundred fifteen million, three hundred eighty-five thousand, five hundred thirty-six".