72922453646 has 16 divisors (see below), whose sum is σ = 125043786720. Its totient is φ = 31244013600.

The previous prime is 72922453619. The next prime is 72922453679. The reversal of 72922453646 is 64635422927.

It is a happy number.

It is a super-3 number, since 3×72922453646³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72922453594 and 72922453603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651881 + ... + 755508.

It is an arithmetic number, because the mean of its divisors is an integer number (7815236670).

Almost surely, 2^72922453646 is an apocalyptic number.

72922453646 is a deficient number, since it is larger than the sum of its proper divisors (52121333074).

72922453646 is a wasteful number, since it uses less digits than its factorization.

72922453646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411099.

The product of its digits is 4354560, while the sum is 50.

The spelling of 72922453646 in words is "seventy-two billion, nine hundred twenty-two million, four hundred fifty-three thousand, six hundred forty-six".