72005228949786 has 64 divisors (see below), whose sum is σ = 165541877867520. Its totient is φ = 20649980453760.

The previous prime is 72005228949737. The next prime is 72005228949887. The reversal of 72005228949786 is 68794982250027.

It is a super-2 number, since 2×72005228949786² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72005228949786.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28477371 + ... + 30902606.

It is an arithmetic number, because the mean of its divisors is an integer number (2586591841680).

Almost surely, 2^{72005228949786} is an apocalyptic number.

72005228949786 is an abundant number, since it is smaller than the sum of its proper divisors (93536648917734).

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

72005228949786 is a wasteful number, since it uses less digits than its factorization.

72005228949786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59380979.

The product of its (nonzero) digits is 243855360, while the sum is 69.

The spelling of 72005228949786 in words is "seventy-two trillion, five billion, two hundred twenty-eight million, nine hundred forty-nine thousand, seven hundred eighty-six".