72556775390 has 64 divisors (see below), whose sum is σ = 144553989312. Its totient is φ = 25999948800.

The previous prime is 72556775381. The next prime is 72556775393. The reversal of 72556775390 is 9357765527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72556775393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11021900 + ... + 11028480.

It is an arithmetic number, because the mean of its divisors is an integer number (2258656083).

Almost surely, 2^72556775390 is an apocalyptic number.

72556775390 is a deficient number, since it is larger than the sum of its proper divisors (71997213922).

72556775390 is a wasteful number, since it uses less digits than its factorization.

72556775390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8045.

The product of its (nonzero) digits is 13891500, while the sum is 56.

The spelling of 72556775390 in words is "seventy-two billion, five hundred fifty-six million, seven hundred seventy-five thousand, three hundred ninety".