80731638042 has 32 divisors (see below), whose sum is σ = 176270805504. Its totient is φ = 24446209200.

The previous prime is 80731638019. The next prime is 80731638047. The reversal of 80731638042 is 24083613708.

It is a junction number, because it is equal to n+sod(n) for n = 80731637985 and 80731638003.

It is not an unprimeable number, because it can be changed into a prime (80731638047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357184 + ... + 537627.

It is an arithmetic number, because the mean of its divisors is an integer number (5508462672).

Almost surely, 2^80731638042 is an apocalyptic number.

80731638042 is an abundant number, since it is smaller than the sum of its proper divisors (95539167462).

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

80731638042 is a wasteful number, since it uses less digits than its factorization.

80731638042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896194.

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 80731638042 in words is "eighty billion, seven hundred thirty-one million, six hundred thirty-eight thousand, forty-two".