72265813684 has 6 divisors (see below), whose sum is σ = 126465173954. Its totient is φ = 36132906840.

The previous prime is 72265813681. The next prime is 72265813703. The reversal of 72265813684 is 48631856227.

It can be written as a sum of positive squares in only one way, i.e., 60127944100 + 12137869584 = 245210^2 + 110172^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72265813681) 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 as a sum of consecutive naturals, namely, 9033226707 + ... + 9033226714.

Almost surely, 2^72265813684 is an apocalyptic number.

It is an amenable number.

72265813684 is a deficient number, since it is larger than the sum of its proper divisors (54199360270).

72265813684 is a wasteful number, since it uses less digits than its factorization.

72265813684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18066453425 (or 18066453423 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 52.

The spelling of 72265813684 in words is "seventy-two billion, two hundred sixty-five million, eight hundred thirteen thousand, six hundred eighty-four".