81753674701 has 4 divisors (see below), whose sum is σ = 81754393600. Its totient is φ = 81752955804.

The previous prime is 81753674683. The next prime is 81753674719. The reversal of 81753674701 is 10747635718.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10747635718 = 2 ⋅5373817859.

It is an interprime number because it is at equal distance from previous prime (81753674683) and next prime (81753674719).

It is a cyclic number.

It is not a de Polignac number, because 81753674701 - 2⁵ = 81753674669 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 (81753674771) 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, 147021 + ... + 430258.

It is an arithmetic number, because the mean of its divisors is an integer number (20438598400).

Almost surely, 2^81753674701 is an apocalyptic number.

It is an amenable number.

81753674701 is a deficient number, since it is larger than the sum of its proper divisors (718899).

81753674701 is a wasteful number, since it uses less digits than its factorization.

81753674701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718898.

The product of its (nonzero) digits is 987840, while the sum is 49.

The spelling of 81753674701 in words is "eighty-one billion, seven hundred fifty-three million, six hundred seventy-four thousand, seven hundred one".