81045479326 has 12 divisors (see below), whose sum is σ = 141416091648. Its totient is φ = 34733776812.

The previous prime is 81045479189. The next prime is 81045479353. The reversal of 81045479326 is 62397454018.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 81045479326.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413497246 + ... + 413497441.

It is an arithmetic number, because the mean of its divisors is an integer number (11784674304).

It is a 1-persistent number, because it is pandigital, but 2⋅81045479326 = 162090958652 is not.

Almost surely, 2^81045479326 is an apocalyptic number.

81045479326 is a deficient number, since it is larger than the sum of its proper divisors (60370612322).

81045479326 is a wasteful number, since it uses less digits than its factorization.

81045479326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826994703 (or 826994696 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 81045479326 in words is "eighty-one billion, forty-five million, four hundred seventy-nine thousand, three hundred twenty-six".