81748084701 has 4 divisors (see below), whose sum is σ = 108997446272. Its totient is φ = 54498723132.

The previous prime is 81748084699. The next prime is 81748084727. The reversal of 81748084701 is 10748084718.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 81748084701 - 2¹ = 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 (81748084771) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13624680781 + ... + 13624680786.

It is an arithmetic number, because the mean of its divisors is an integer number (27249361568).

Almost surely, 2^81748084701 is an apocalyptic number.

It is an amenable number.

81748084701 is a deficient number, since it is larger than the sum of its proper divisors (27249361571).

81748084701 is a wasteful number, since it uses less digits than its factorization.

81748084701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27249361570.

The product of its (nonzero) digits is 401408, while the sum is 48.

The spelling of 81748084701 in words is "eighty-one billion, seven hundred forty-eight million, eighty-four thousand, seven hundred one".