361857513673 has 2 divisors, whose sum is σ = 361857513674. Its totient is φ = 361857513672.

The previous prime is 361857513631. The next prime is 361857513737. The reversal of 361857513673 is 376315758163.

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., 198036570169 + 163820943504 = 445013^2 + 404748^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361857513673 is a prime.

It is not a weakly prime, because it can be changed into another prime (361857516673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180928756836 + 180928756837.

It is an arithmetic number, because the mean of its divisors is an integer number (180928756837).

Almost surely, 2^361857513673 is an apocalyptic number.

It is an amenable number.

361857513673 is a deficient number, since it is larger than the sum of its proper divisors (1).

361857513673 is an equidigital number, since it uses as much as digits as its factorization.

361857513673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600, while the sum is 55.

The spelling of 361857513673 in words is "three hundred sixty-one billion, eight hundred fifty-seven million, five hundred thirteen thousand, six hundred seventy-three".