80681502735 has 80 divisors (see below), whose sum is σ = 149155956576. Its totient is φ = 41865268608.

The previous prime is 80681502709. The next prime is 80681502749. The reversal of 80681502735 is 53720518608.

80681502735 is a `hidden beast` number, since 80 + 68 + 1 + 502 + 7 + 3 + 5 = 666.

It is not a de Polignac number, because 80681502735 - 2¹⁹ = 80680978447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3630277 + ... + 3652433.

Almost surely, 2^80681502735 is an apocalyptic number.

80681502735 is a deficient number, since it is larger than the sum of its proper divisors (68474453841).

80681502735 is an frugal number, since it uses more digits than its factorization.

80681502735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22226 (or 22202 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 80681502735 in words is "eighty billion, six hundred eighty-one million, five hundred two thousand, seven hundred thirty-five".