80540973478 has 16 divisors (see below), whose sum is σ = 138372374304. Its totient is φ = 34442026560.

The previous prime is 80540973473. The next prime is 80540973517. The reversal of 80540973478 is 87437904508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80540973473) 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, 6287833 + ... + 6300628.

It is an arithmetic number, because the mean of its divisors is an integer number (8648273394).

Almost surely, 2^80540973478 is an apocalyptic number.

80540973478 is a deficient number, since it is larger than the sum of its proper divisors (57831400826).

80540973478 is a wasteful number, since it uses less digits than its factorization.

80540973478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12588927.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 80540973478 in words is "eighty billion, five hundred forty million, nine hundred seventy-three thousand, four hundred seventy-eight".