81484578695 has 8 divisors (see below), whose sum is σ = 105303147936. Its totient is φ = 60173227296.

The previous prime is 81484578689. The next prime is 81484578701. The reversal of 81484578695 is 59687548418.

It is an interprime number because it is at equal distance from previous prime (81484578689) and next prime (81484578701).

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

It is not a de Polignac number, because 81484578695 - 2⁶ = 81484578631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65), and also a Moran number because the ratio is a prime number: 1253608903 = 81484578695 / (8 + 1 + 4 + 8 + 4 + 5 + 7 + 8 + 6 + 9 + 5).

It is a Duffinian number.

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, 626804387 + ... + 626804516.

It is an arithmetic number, because the mean of its divisors is an integer number (13162893492).

Almost surely, 2^81484578695 is an apocalyptic number.

81484578695 is a deficient number, since it is larger than the sum of its proper divisors (23818569241).

81484578695 is a wasteful number, since it uses less digits than its factorization.

81484578695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253608921.

The product of its digits is 77414400, while the sum is 65.

The spelling of 81484578695 in words is "eighty-one billion, four hundred eighty-four million, five hundred seventy-eight thousand, six hundred ninety-five".