72027674503661 has 2 divisors, whose sum is σ = 72027674503662. Its totient is φ = 72027674503660.

The previous prime is 72027674503643. The next prime is 72027674503663. The reversal of 72027674503661 is 16630547672027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44337872851561 + 27689801652100 = 6658669^2 + 5262110^2 .

It is an emirp because it is prime and its reverse (16630547672027) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72027674503661 is a prime.

Together with 72027674503663, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72027674503597 and 72027674503606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72027674503663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36013837251830 + 36013837251831.

It is an arithmetic number, because the mean of its divisors is an integer number (36013837251831).

Almost surely, 2^{72027674503661} is an apocalyptic number.

It is an amenable number.

72027674503661 is a deficient number, since it is larger than the sum of its proper divisors (1).

72027674503661 is an equidigital number, since it uses as much as digits as its factorization.

72027674503661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17781120, while the sum is 56.

The spelling of 72027674503661 in words is "seventy-two trillion, twenty-seven billion, six hundred seventy-four million, five hundred three thousand, six hundred sixty-one".