80606007781 has 8 divisors (see below), whose sum is σ = 88102089824. Its totient is φ = 73295014320.

The previous prime is 80606007767. The next prime is 80606007793. The reversal of 80606007781 is 18770060608.

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

It is a cyclic number.

It is not a de Polignac number, because 80606007781 - 2²³ = 80597619173 is a prime.

It is a super-2 number, since 2×80606007781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80606007281) 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, 46271235 + ... + 46272976.

It is an arithmetic number, because the mean of its divisors is an integer number (11012761228).

Almost surely, 2^80606007781 is an apocalyptic number.

It is an amenable number.

80606007781 is a deficient number, since it is larger than the sum of its proper divisors (7496082043).

80606007781 is a wasteful number, since it uses less digits than its factorization.

80606007781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92544291.

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 80606007781 in words is "eighty billion, six hundred six million, seven thousand, seven hundred eighty-one".