81264345750354 has 48 divisors (see below), whose sum is σ = 185255375594400. Its totient is φ = 23688392277888.

The previous prime is 81264345750331. The next prime is 81264345750397. The reversal of 81264345750354 is 45305754346218.

It is a super-2 number, since 2×81264345750354² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 81264345750294 and 81264345750303.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2108990019 + ... + 2109028550.

It is an arithmetic number, because the mean of its divisors is an integer number (3859486991550).

Almost surely, 2^{81264345750354} is an apocalyptic number.

81264345750354 is an abundant number, since it is smaller than the sum of its proper divisors (103991029844046).

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

81264345750354 is a wasteful number, since it uses less digits than its factorization.

81264345750354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218018619 (or 4218018606 counting only the distinct ones).

The product of its (nonzero) digits is 48384000, while the sum is 57.

The spelling of 81264345750354 in words is "eighty-one trillion, two hundred sixty-four billion, three hundred forty-five million, seven hundred fifty thousand, three hundred fifty-four".