81480075015 has 8 divisors (see below), whose sum is σ = 130368120048. Its totient is φ = 43456040000.

The previous prime is 81480074989. The next prime is 81480075037. The reversal of 81480075015 is 51057008418.

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

It is not a de Polignac number, because 81480075015 - 2¹⁴ = 81480058631 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2716002486 + ... + 2716002515.

It is an arithmetic number, because the mean of its divisors is an integer number (16296015006).

Almost surely, 2^81480075015 is an apocalyptic number.

81480075015 is a deficient number, since it is larger than the sum of its proper divisors (48888045033).

81480075015 is a wasteful number, since it uses less digits than its factorization.

81480075015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432005009.

The product of its (nonzero) digits is 44800, while the sum is 39.

The spelling of 81480075015 in words is "eighty-one billion, four hundred eighty million, seventy-five thousand, fifteen".