81743003741 has 16 divisors (see below), whose sum is σ = 95756204544. Its totient is φ = 68319269424.

The previous prime is 81743003731. The next prime is 81743003777. The reversal of 81743003741 is 14730034718.

It is a de Polignac number, because none of the positive numbers 2^k-81743003741 is a prime.

It is a super-2 number, since 2×81743003741² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 81743003695 and 81743003704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81743003731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54635 + ... + 408008.

It is an arithmetic number, because the mean of its divisors is an integer number (5984762784).

Almost surely, 2^81743003741 is an apocalyptic number.

It is an amenable number.

81743003741 is a deficient number, since it is larger than the sum of its proper divisors (14013200803).

81743003741 is a wasteful number, since it uses less digits than its factorization.

81743003741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463280.

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 81743003741 in words is "eighty-one billion, seven hundred forty-three million, three thousand, seven hundred forty-one".