72065172046 has 64 divisors (see below), whose sum is σ = 127302658560. Its totient is φ = 29960294400.

The previous prime is 72065172041. The next prime is 72065172059. The reversal of 72065172046 is 64027156027.

It is a super-2 number, since 2×72065172046² (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 (72065172041) 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 31 ways as a sum of consecutive naturals, for example, 32127801 + ... + 32130043.

It is an arithmetic number, because the mean of its divisors is an integer number (1989104040).

Almost surely, 2^72065172046 is an apocalyptic number.

72065172046 is a deficient number, since it is larger than the sum of its proper divisors (55237486514).

72065172046 is a wasteful number, since it uses less digits than its factorization.

72065172046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 72065172046 in words is "seventy-two billion, sixty-five million, one hundred seventy-two thousand, forty-six".