361645502077 has 2 divisors, whose sum is σ = 361645502078. Its totient is φ = 361645502076.

The previous prime is 361645502027. The next prime is 361645502081. The reversal of 361645502077 is 770205546163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293134533561 + 68510968516 = 541419^2 + 261746^2 .

It is an emirp because it is prime and its reverse (770205546163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 361645502077 - 2¹⁹ = 361644977789 is a prime.

It is a super-2 number, since 2×361645502077² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361645502027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180822751038 + 180822751039.

It is an arithmetic number, because the mean of its divisors is an integer number (180822751039).

Almost surely, 2^361645502077 is an apocalyptic number.

It is an amenable number.

361645502077 is a deficient number, since it is larger than the sum of its proper divisors (1).

361645502077 is an equidigital number, since it uses as much as digits as its factorization.

361645502077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 361645502077 in words is "three hundred sixty-one billion, six hundred forty-five million, five hundred two thousand, seventy-seven".