80749254838521 has 16 divisors (see below), whose sum is σ = 110707350768000. Its totient is φ = 52315466012928.

The previous prime is 80749254838481. The next prime is 80749254838523. The reversal of 80749254838521 is 12583845294708.

It is not a de Polignac number, because 80749254838521 - 2²¹ = 80749252741369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80749254838523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433441296 + ... + 433627553.

It is an arithmetic number, because the mean of its divisors is an integer number (6919209423000).

Almost surely, 2^{80749254838521} is an apocalyptic number.

It is an amenable number.

80749254838521 is a deficient number, since it is larger than the sum of its proper divisors (29958095929479).

80749254838521 is a wasteful number, since it uses less digits than its factorization.

80749254838521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867069728.

The product of its (nonzero) digits is 154828800, while the sum is 66.

The spelling of 80749254838521 in words is "eighty trillion, seven hundred forty-nine billion, two hundred fifty-four million, eight hundred thirty-eight thousand, five hundred twenty-one".