80621725547386 has 12 divisors (see below), whose sum is σ = 125246473757262. Its totient is φ = 38920833022064.

The previous prime is 80621725547381. The next prime is 80621725547387. The reversal of 80621725547386 is 68374552712608.

It can be written as a sum of positive squares in 3 ways, for example, as 65248025640625 + 15373699906761 = 8077625^2 + 3920931^2 .

It is not an unprimeable number, because it can be changed into a prime (80621725547381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23966028505 + ... + 23966031868.

Almost surely, 2^{80621725547386} is an apocalyptic number.

80621725547386 is a deficient number, since it is larger than the sum of its proper divisors (44624748209876).

80621725547386 is a wasteful number, since it uses less digits than its factorization.

80621725547386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47932060433 (or 47932060404 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 64.

The spelling of 80621725547386 in words is "eighty trillion, six hundred twenty-one billion, seven hundred twenty-five million, five hundred forty-seven thousand, three hundred eighty-six".