81121484541119 has 8 divisors (see below), whose sum is σ = 88575963132240. Its totient is φ = 73680305646400.

The previous prime is 81121484541113. The next prime is 81121484541121. The reversal of 81121484541119 is 91114548412118.

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

It is a cyclic number.

It is not a de Polignac number, because 81121484541119 - 2⁴ = 81121484541103 is a prime.

It is a super-2 number, since 2×81121484541119² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81121484541113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3324911342 + ... + 3324935739.

It is an arithmetic number, because the mean of its divisors is an integer number (11071995391530).

Almost surely, 2^{81121484541119} is an apocalyptic number.

81121484541119 is a deficient number, since it is larger than the sum of its proper divisors (7454478591121).

81121484541119 is a wasteful number, since it uses less digits than its factorization.

81121484541119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6649848201.

The product of its digits is 368640, while the sum is 50.

The spelling of 81121484541119 in words is "eighty-one trillion, one hundred twenty-one billion, four hundred eighty-four million, five hundred forty-one thousand, one hundred nineteen".