80187678709 has 8 divisors (see below), whose sum is σ = 85172444568. Its totient is φ = 75232673280.

The previous prime is 80187678671. The next prime is 80187678719. The reversal of 80187678709 is 90787678108.

It can be written as a sum of positive squares in 4 ways, for example, as 11489696100 + 68697982609 = 107190^2 + 262103^2 .

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 80187678709 - 2¹¹ = 80187676661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80187678719) 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, 7434552 + ... + 7445329.

It is an arithmetic number, because the mean of its divisors is an integer number (10646555571).

Almost surely, 2^80187678709 is an apocalyptic number.

It is an amenable number.

80187678709 is a deficient number, since it is larger than the sum of its proper divisors (4984765859).

80187678709 is a wasteful number, since it uses less digits than its factorization.

80187678709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14880215.

The product of its (nonzero) digits is 9483264, while the sum is 61.

The spelling of 80187678709 in words is "eighty billion, one hundred eighty-seven million, six hundred seventy-eight thousand, seven hundred nine".