72227555130737 has 2 divisors, whose sum is σ = 72227555130738. Its totient is φ = 72227555130736.

The previous prime is 72227555130649. The next prime is 72227555130749. The reversal of 72227555130737 is 73703155572227.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57701707514896 + 14525847615841 = 7596164^2 + 3811279^2 .

It is a cyclic number.

It is not a de Polignac number, because 72227555130737 - 2⁸ = 72227555130481 is a prime.

It is not a weakly prime, because it can be changed into another prime (72227555130937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36113777565368 + 36113777565369.

It is an arithmetic number, because the mean of its divisors is an integer number (36113777565369).

Almost surely, 2^{72227555130737} is an apocalyptic number.

It is an amenable number.

72227555130737 is a deficient number, since it is larger than the sum of its proper divisors (1).

72227555130737 is an equidigital number, since it uses as much as digits as its factorization.

72227555130737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21609000, while the sum is 56.

The spelling of 72227555130737 in words is "seventy-two trillion, two hundred twenty-seven billion, five hundred fifty-five million, one hundred thirty thousand, seven hundred thirty-seven".