72227257076 has 12 divisors (see below), whose sum is σ = 136120599972. Its totient is φ = 33335657088.

The previous prime is 72227257061. The next prime is 72227257163. The reversal of 72227257076 is 67075272227.

It can be written as a sum of positive squares in 2 ways, for example, as 9964032400 + 62263224676 = 99820^2 + 249526^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72227257076.

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 3 ways as a sum of consecutive naturals, for example, 694492805 + ... + 694492908.

It is an arithmetic number, because the mean of its divisors is an integer number (11343383331).

Almost surely, 2^72227257076 is an apocalyptic number.

It is an amenable number.

72227257076 is a deficient number, since it is larger than the sum of its proper divisors (63893342896).

72227257076 is a wasteful number, since it uses less digits than its factorization.

72227257076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388985730 (or 1388985728 counting only the distinct ones).

The product of its (nonzero) digits is 1152480, while the sum is 47.

The spelling of 72227257076 in words is "seventy-two billion, two hundred twenty-seven million, two hundred fifty-seven thousand, seventy-six".