80687688531078 has 16 divisors (see below), whose sum is σ = 162403245707760. Its totient is φ = 26724584736096.

The previous prime is 80687688531071. The next prime is 80687688531097. The reversal of 80687688531078 is 87013588678608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80687688531071) 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, 42827859213 + ... + 42827861096.

It is an arithmetic number, because the mean of its divisors is an integer number (10150202856735).

Almost surely, 2^{80687688531078} is an apocalyptic number.

80687688531078 is an abundant number, since it is smaller than the sum of its proper divisors (81715557176682).

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

80687688531078 is a wasteful number, since it uses less digits than its factorization.

80687688531078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85655720471.

The product of its (nonzero) digits is 867041280, while the sum is 75.

The spelling of 80687688531078 in words is "eighty trillion, six hundred eighty-seven billion, six hundred eighty-eight million, five hundred thirty-one thousand, seventy-eight".