8022137778 has 90 divisors (see below), whose sum is σ = 18656276463. Its totient is φ = 2576386440.

The previous prime is 8022137771. The next prime is 8022137843. The reversal of 8022137778 is 8777312208.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4011068889 + 4011068889 = 63333^2 + 63333^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=63333.

It is not an unprimeable number, because it can be changed into a prime (8022137771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 35339701 + ... + 35339927.

Almost surely, 2^8022137778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8022137778

8022137778 is an abundant number, since it is smaller than the sum of its proper divisors (10634138685).

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

8022137778 is an equidigital number, since it uses as much as digits as its factorization.

8022137778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The square root of 8022137778 is about 89566.3875457752. The cubic root of 8022137778 is about 2001.8431157737.

The spelling of 8022137778 in words is "eight billion, twenty-two million, one hundred thirty-seven thousand, seven hundred seventy-eight".