147071971777 has 2 divisors, whose sum is σ = 147071971778. Its totient is φ = 147071971776.

The previous prime is 147071971727. The next prime is 147071971789. The reversal of 147071971777 is 777179170741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132930243216 + 14141728561 = 364596^2 + 118919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147071971777 is a prime.

It is a super-3 number, since 3×147071971777³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (147071971727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73535985888 + 73535985889.

It is an arithmetic number, because the mean of its divisors is an integer number (73535985889).

Almost surely, 2^147071971777 is an apocalyptic number.

It is an amenable number.

147071971777 is a deficient number, since it is larger than the sum of its proper divisors (1).

147071971777 is an equidigital number, since it uses as much as digits as its factorization.

147071971777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4235364, while the sum is 58.

The spelling of 147071971777 in words is "one hundred forty-seven billion, seventy-one million, nine hundred seventy-one thousand, seven hundred seventy-seven".