1178972222377 has 2 divisors, whose sum is σ = 1178972222378. Its totient is φ = 1178972222376.

The previous prime is 1178972222371. The next prime is 1178972222411. The reversal of 1178972222377 is 7732222798711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1139462311936 + 39509910441 = 1067456^2 + 198771^2 .

It is a cyclic number.

It is not a de Polignac number, because 1178972222377 - 2³ = 1178972222369 is a prime.

It is a super-2 number, since 2×1178972222377² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1178972222371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589486111188 + 589486111189.

It is an arithmetic number, because the mean of its divisors is an integer number (589486111189).

Almost surely, 2^{1178972222377} is an apocalyptic number.

It is an amenable number.

1178972222377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1178972222377 is an equidigital number, since it uses as much as digits as its factorization.

1178972222377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8297856, while the sum is 58.

The spelling of 1178972222377 in words is "one trillion, one hundred seventy-eight billion, nine hundred seventy-two million, two hundred twenty-two thousand, three hundred seventy-seven".