80644008722 has 32 divisors (see below), whose sum is σ = 125097799680. Its totient is φ = 38963975680.

The previous prime is 80644008721. The next prime is 80644008749. The reversal of 80644008722 is 22780044608.

It is a super-2 number, since 2×80644008722² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 80644008722.

It is not an unprimeable number, because it can be changed into a prime (80644008721) 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 15 ways as a sum of consecutive naturals, for example, 26675303 + ... + 26678325.

It is an arithmetic number, because the mean of its divisors is an integer number (3909306240).

Almost surely, 2^80644008722 is an apocalyptic number.

80644008722 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

80644008722 is a deficient number, since it is larger than the sum of its proper divisors (44453790958).

80644008722 is a wasteful number, since it uses less digits than its factorization.

80644008722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6058.

The product of its (nonzero) digits is 172032, while the sum is 41.

The spelling of 80644008722 in words is "eighty billion, six hundred forty-four million, eight thousand, seven hundred twenty-two".