80618785442 has 64 divisors (see below), whose sum is σ = 135495951360. Its totient is φ = 35724499200.

The previous prime is 80618785439. The next prime is 80618785453. The reversal of 80618785442 is 24458781608.

It is a super-2 number, since 2×80618785442² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68845517 + ... + 68846687.

It is an arithmetic number, because the mean of its divisors is an integer number (2117124240).

Almost surely, 2^80618785442 is an apocalyptic number.

80618785442 is a deficient number, since it is larger than the sum of its proper divisors (54877165918).

80618785442 is a wasteful number, since it uses less digits than its factorization.

80618785442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819.

The product of its (nonzero) digits is 3440640, while the sum is 53.

The spelling of 80618785442 in words is "eighty billion, six hundred eighteen million, seven hundred eighty-five thousand, four hundred forty-two".