72246753036481 has 9 divisors (see below), whose sum is σ = 73817031806049. Its totient is φ = 70709197087044.

The previous prime is 72246753036467. The next prime is 72246753036487. The reversal of 72246753036481 is 18463035764227.

The square root of 72246753036481 is 8499809.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 72246753036481 - 2⁵ = 72246753036449 is a prime.

It is a super-2 number, since 2×72246753036481² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72246753036487) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 399400600 + ... + 399581446.

Almost surely, 2^{72246753036481} is an apocalyptic number.

72246753036481 is the 8499809-th square number.

72246753036481 is the 4249905-th centered octagonal number.

It is an amenable number.

72246753036481 is a deficient number, since it is larger than the sum of its proper divisors (1570278769568).

72246753036481 is an frugal number, since it uses more digits than its factorization.

72246753036481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361788 (or 180894 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 58.

The spelling of 72246753036481 in words is "seventy-two trillion, two hundred forty-six billion, seven hundred fifty-three million, thirty-six thousand, four hundred eighty-one".