81818741102 has 8 divisors (see below), whose sum is σ = 140260699056. Its totient is φ = 35065174752.

The previous prime is 81818741101. The next prime is 81818741107. The reversal of 81818741102 is 20114781818.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×81818741102² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 81818741102.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2922097883 + ... + 2922097910.

It is an arithmetic number, because the mean of its divisors is an integer number (17532587382).

Almost surely, 2^81818741102 is an apocalyptic number.

81818741102 is a deficient number, since it is larger than the sum of its proper divisors (58441957954).

81818741102 is a wasteful number, since it uses less digits than its factorization.

81818741102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844195802.

The product of its (nonzero) digits is 28672, while the sum is 41.

The spelling of 81818741102 in words is "eighty-one billion, eight hundred eighteen million, seven hundred forty-one thousand, one hundred two".