80540499999 has 16 divisors (see below), whose sum is σ = 110098334304. Its totient is φ = 52340352000.

The previous prime is 80540499997. The next prime is 80540500031. The reversal of 80540499999 is 99999404508.

It is not a de Polignac number, because 80540499999 - 2¹ = 80540499997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80540499997) 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, 124884 + ... + 420329.

It is an arithmetic number, because the mean of its divisors is an integer number (6881145894).

Almost surely, 2^80540499999 is an apocalyptic number.

80540499999 is a deficient number, since it is larger than the sum of its proper divisors (29557834305).

80540499999 is a wasteful number, since it uses less digits than its factorization.

80540499999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546458.

The product of its (nonzero) digits is 37791360, while the sum is 66.

The spelling of 80540499999 in words is "eighty billion, five hundred forty million, four hundred ninety-nine thousand, nine hundred ninety-nine".