72163560240545 has 32 divisors (see below), whose sum is σ = 93452060344320. Its totient is φ = 53361774797760.

The previous prime is 72163560240523. The next prime is 72163560240547. The reversal of 72163560240545 is 54504206536127.

It is not a de Polignac number, because 72163560240545 - 2²⁴ = 72163543463329 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72163560240493 and 72163560240502.

It is not an unprimeable number, because it can be changed into a prime (72163560240547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84074651 + ... + 84928640.

It is an arithmetic number, because the mean of its divisors is an integer number (2920376885760).

Almost surely, 2^{72163560240545} is an apocalyptic number.

It is an amenable number.

72163560240545 is a deficient number, since it is larger than the sum of its proper divisors (21288500103775).

72163560240545 is a wasteful number, since it uses less digits than its factorization.

72163560240545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169003445.

The product of its (nonzero) digits is 6048000, while the sum is 50.

The spelling of 72163560240545 in words is "seventy-two trillion, one hundred sixty-three billion, five hundred sixty million, two hundred forty thousand, five hundred forty-five".