188730272077 has 2 divisors, whose sum is σ = 188730272078. Its totient is φ = 188730272076.

The previous prime is 188730272051. The next prime is 188730272147. The reversal of 188730272077 is 770272037881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162224478441 + 26505793636 = 402771^2 + 162806^2 .

It is a cyclic number.

It is not a de Polignac number, because 188730272077 - 2⁷ = 188730271949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188730272177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94365136038 + 94365136039.

It is an arithmetic number, because the mean of its divisors is an integer number (94365136039).

Almost surely, 2^188730272077 is an apocalyptic number.

It is an amenable number.

188730272077 is a deficient number, since it is larger than the sum of its proper divisors (1).

188730272077 is an equidigital number, since it uses as much as digits as its factorization.

188730272077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1843968, while the sum is 52.

The spelling of 188730272077 in words is "one hundred eighty-eight billion, seven hundred thirty million, two hundred seventy-two thousand, seventy-seven".