72556771341653 has 2 divisors, whose sum is σ = 72556771341654. Its totient is φ = 72556771341652.

The previous prime is 72556771341643. The next prime is 72556771341797. The reversal of 72556771341653 is 35614317765527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56422587181009 + 16134184160644 = 7511497^2 + 4016738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72556771341653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72556771341643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36278385670826 + 36278385670827.

It is an arithmetic number, because the mean of its divisors is an integer number (36278385670827).

Almost surely, 2^{72556771341653} is an apocalyptic number.

It is an amenable number.

72556771341653 is a deficient number, since it is larger than the sum of its proper divisors (1).

72556771341653 is an equidigital number, since it uses as much as digits as its factorization.

72556771341653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132000, while the sum is 62.

The spelling of 72556771341653 in words is "seventy-two trillion, five hundred fifty-six billion, seven hundred seventy-one million, three hundred forty-one thousand, six hundred fifty-three".