72930920806 has 16 divisors (see below), whose sum is σ = 110768669424. Its totient is φ = 36010881504.

The previous prime is 72930920801. The next prime is 72930920833. The reversal of 72930920806 is 60802903927.

It is a super-2 number, since 2×72930920806² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72930920801) by changing a digit.

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, 661285 + ... + 763648.

It is an arithmetic number, because the mean of its divisors is an integer number (6923041839).

Almost surely, 2^72930920806 is an apocalyptic number.

72930920806 is a deficient number, since it is larger than the sum of its proper divisors (37837748618).

72930920806 is a wasteful number, since it uses less digits than its factorization.

72930920806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425255.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 72930920806 in words is "seventy-two billion, nine hundred thirty million, nine hundred twenty thousand, eight hundred six".