145556611177 has 2 divisors, whose sum is σ = 145556611178. Its totient is φ = 145556611176.

The previous prime is 145556611169. The next prime is 145556611201. The reversal of 145556611177 is 771116655541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137952073561 + 7604537616 = 371419^2 + 87204^2 .

It is a cyclic number.

It is not a de Polignac number, because 145556611177 - 2³ = 145556611169 is a prime.

It is a super-2 number, since 2×145556611177² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145556611177.

It is not a weakly prime, because it can be changed into another prime (145556611147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72778305588 + 72778305589.

It is an arithmetic number, because the mean of its divisors is an integer number (72778305589).

Almost surely, 2^145556611177 is an apocalyptic number.

It is an amenable number.

145556611177 is a deficient number, since it is larger than the sum of its proper divisors (1).

145556611177 is an equidigital number, since it uses as much as digits as its factorization.

145556611177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882000, while the sum is 49.

The spelling of 145556611177 in words is "one hundred forty-five billion, five hundred fifty-six million, six hundred eleven thousand, one hundred seventy-seven".