81519302346 has 8 divisors (see below), whose sum is σ = 163038604704. Its totient is φ = 27173100780.

The previous prime is 81519302341. The next prime is 81519302357. The reversal of 81519302346 is 64320391518.

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

81519302346 is an admirable number.

It is a super-2 number, since 2×81519302346² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 81519302298 and 81519302307.

It is not an unprimeable number, because it can be changed into a prime (81519302341) 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 3 ways as a sum of consecutive naturals, for example, 6793275190 + ... + 6793275201.

It is an arithmetic number, because the mean of its divisors is an integer number (20379825588).

Almost surely, 2^81519302346 is an apocalyptic number.

81519302346 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81519302346 is a wasteful number, since it uses less digits than its factorization.

81519302346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13586550396.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 81519302346 in words is "eighty-one billion, five hundred nineteen million, three hundred two thousand, three hundred forty-six".