361507136521 has 2 divisors, whose sum is σ = 361507136522. Its totient is φ = 361507136520.

The previous prime is 361507136503. The next prime is 361507136533. The reversal of 361507136521 is 125631705163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333551296521 + 27955840000 = 577539^2 + 167200^2 .

It is a cyclic number.

It is not a de Polignac number, because 361507136521 - 2¹³ = 361507128329 is a prime.

It is a super-2 number, since 2×361507136521² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (361507136021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180753568260 + 180753568261.

It is an arithmetic number, because the mean of its divisors is an integer number (180753568261).

Almost surely, 2^361507136521 is an apocalyptic number.

It is an amenable number.

361507136521 is a deficient number, since it is larger than the sum of its proper divisors (1).

361507136521 is an equidigital number, since it uses as much as digits as its factorization.

361507136521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 361507136521 in words is "three hundred sixty-one billion, five hundred seven million, one hundred thirty-six thousand, five hundred twenty-one".