80087243781 has 16 divisors (see below), whose sum is σ = 107497147968. Its totient is φ = 53034633600.

The previous prime is 80087243777. The next prime is 80087243837. The reversal of 80087243781 is 18734278008.

It is a happy number.

It is not a de Polignac number, because 80087243781 - 2² = 80087243777 is a prime.

It is a super-2 number, since 2×80087243781² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80087243781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80087243701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1562521 + ... + 1612961.

It is an arithmetic number, because the mean of its divisors is an integer number (6718571748).

Almost surely, 2^80087243781 is an apocalyptic number.

It is an amenable number.

80087243781 is a deficient number, since it is larger than the sum of its proper divisors (27409904187).

80087243781 is a wasteful number, since it uses less digits than its factorization.

80087243781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53972.

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 80087243781 in words is "eighty billion, eighty-seven million, two hundred forty-three thousand, seven hundred eighty-one".