80742144981 has 8 divisors (see below), whose sum is σ = 109421049184. Its totient is φ = 52945668720.

The previous prime is 80742144979. The next prime is 80742145007. The reversal of 80742144981 is 18944124708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80742144981 - 2¹ = 80742144979 is a prime.

It is a super-2 number, since 2×80742144981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80742144981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80742144911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220606771 + ... + 220607136.

It is an arithmetic number, because the mean of its divisors is an integer number (13677631148).

Almost surely, 2^80742144981 is an apocalyptic number.

It is an amenable number.

80742144981 is a deficient number, since it is larger than the sum of its proper divisors (28678904203).

80742144981 is a wasteful number, since it uses less digits than its factorization.

80742144981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441213971.

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 80742144981 in words is "eighty billion, seven hundred forty-two million, one hundred forty-four thousand, nine hundred eighty-one".