72550424036537 has 2 divisors, whose sum is σ = 72550424036538. Its totient is φ = 72550424036536.

The previous prime is 72550424036443. The next prime is 72550424036543. The reversal of 72550424036537 is 73563042405527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54951694269481 + 17598729767056 = 7412941^2 + 4195084^2 .

It is a cyclic number.

It is not a de Polignac number, because 72550424036537 - 2²⁸ = 72550155601081 is a prime.

It is not a weakly prime, because it can be changed into another prime (72552424036537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36275212018268 + 36275212018269.

It is an arithmetic number, because the mean of its divisors is an integer number (36275212018269).

Almost surely, 2^{72550424036537} is an apocalyptic number.

It is an amenable number.

72550424036537 is a deficient number, since it is larger than the sum of its proper divisors (1).

72550424036537 is an equidigital number, since it uses as much as digits as its factorization.

72550424036537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168000, while the sum is 53.

The spelling of 72550424036537 in words is "seventy-two trillion, five hundred fifty billion, four hundred twenty-four million, thirty-six thousand, five hundred thirty-seven".