81818741103 has 48 divisors (see below), whose sum is σ = 122866719360. Its totient is φ = 48367851840.

The previous prime is 81818741101. The next prime is 81818741107. The reversal of 81818741103 is 30114781818.

It is not a de Polignac number, because 81818741103 - 2¹ = 81818741101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81818741101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12936700 + ... + 12943022.

It is an arithmetic number, because the mean of its divisors is an integer number (2559723320).

Almost surely, 2^81818741103 is an apocalyptic number.

81818741103 is a deficient number, since it is larger than the sum of its proper divisors (41047978257).

81818741103 is a wasteful number, since it uses less digits than its factorization.

81818741103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7220 (or 7209 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 42.

The spelling of 81818741103 in words is "eighty-one billion, eight hundred eighteen million, seven hundred forty-one thousand, one hundred three".