7221072368136 has 128 divisors (see below), whose sum is σ = 20179437465600. Its totient is φ = 2134275648000.

The previous prime is 7221072368129. The next prime is 7221072368141. The reversal of 7221072368136 is 6318632701227.

It is a super-2 number, since 2×7221072368136² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42334141 + ... + 42504371.

It is an arithmetic number, because the mean of its divisors is an integer number (157651855200).

Almost surely, 2^{7221072368136} 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 7221072368136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10089718732800).

7221072368136 is an abundant number, since it is smaller than the sum of its proper divisors (12958365097464).

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

7221072368136 is a wasteful number, since it uses less digits than its factorization.

7221072368136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174211 (or 174207 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 7221072368136 in words is "seven trillion, two hundred twenty-one billion, seventy-two million, three hundred sixty-eight thousand, one hundred thirty-six".