81434101015 has 8 divisors (see below), whose sum is σ = 97722581040. Its totient is φ = 65146174272.

The previous prime is 81434101003. The next prime is 81434101039. The reversal of 81434101015 is 51010143418.

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 81434101015 - 2⁵ = 81434100983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329067 + ... + 520723.

It is an arithmetic number, because the mean of its divisors is an integer number (12215322630).

Almost surely, 2^81434101015 is an apocalyptic number.

81434101015 is a deficient number, since it is larger than the sum of its proper divisors (16288480025).

81434101015 is a wasteful number, since it uses less digits than its factorization.

81434101015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276641.

The product of its (nonzero) digits is 1920, while the sum is 28.

The spelling of 81434101015 in words is "eighty-one billion, four hundred thirty-four million, one hundred one thousand, fifteen".