81748084703 has 4 divisors (see below), whose sum is σ = 81990660960. Its totient is φ = 81505508448.

The previous prime is 81748084699. The next prime is 81748084727. The reversal of 81748084703 is 30748084718.

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

It is a cyclic number.

It is not a de Polignac number, because 81748084703 - 2² = 81748084699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81748084753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121287623 + ... + 121288296.

It is an arithmetic number, because the mean of its divisors is an integer number (20497665240).

Almost surely, 2^81748084703 is an apocalyptic number.

81748084703 is a deficient number, since it is larger than the sum of its proper divisors (242576257).

81748084703 is a wasteful number, since it uses less digits than its factorization.

81748084703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242576256.

The product of its (nonzero) digits is 1204224, while the sum is 50.

The spelling of 81748084703 in words is "eighty-one billion, seven hundred forty-eight million, eighty-four thousand, seven hundred three".