81744296603 has 4 divisors (see below), whose sum is σ = 82095130728. Its totient is φ = 81393462480.

The previous prime is 81744296567. The next prime is 81744296611. The reversal of 81744296603 is 30669244718.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81744296603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81744296693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175416713 + ... + 175417178.

It is an arithmetic number, because the mean of its divisors is an integer number (20523782682).

Almost surely, 2^81744296603 is an apocalyptic number.

81744296603 is a deficient number, since it is larger than the sum of its proper divisors (350834125).

81744296603 is a wasteful number, since it uses less digits than its factorization.

81744296603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350834124.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 81744296603 in words is "eighty-one billion, seven hundred forty-four million, two hundred ninety-six thousand, six hundred three".