147771995377 has 2 divisors, whose sum is σ = 147771995378. Its totient is φ = 147771995376.

The previous prime is 147771995317. The next prime is 147771995383. The reversal of 147771995377 is 773599177741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111635506161 + 36136489216 = 334119^2 + 190096^2 .

It is a cyclic number.

It is not a de Polignac number, because 147771995377 - 2¹⁵ = 147771962609 is a prime.

It is not a weakly prime, because it can be changed into another prime (147771995317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73885997688 + 73885997689.

It is an arithmetic number, because the mean of its divisors is an integer number (73885997689).

Almost surely, 2^147771995377 is an apocalyptic number.

It is an amenable number.

147771995377 is a deficient number, since it is larger than the sum of its proper divisors (1).

147771995377 is an equidigital number, since it uses as much as digits as its factorization.

147771995377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81682020, while the sum is 67.

The spelling of 147771995377 in words is "one hundred forty-seven billion, seven hundred seventy-one million, nine hundred ninety-five thousand, three hundred seventy-seven".