11802370167521 has 2 divisors, whose sum is σ = 11802370167522. Its totient is φ = 11802370167520.

The previous prime is 11802370167499. The next prime is 11802370167547. The reversal of 11802370167521 is 12576107320811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8112471097600 + 3689899069921 = 2848240^2 + 1920911^2 .

It is a cyclic number.

It is not a de Polignac number, because 11802370167521 - 2¹⁸ = 11802369905377 is a prime.

It is not a weakly prime, because it can be changed into another prime (11802370167571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5901185083760 + 5901185083761.

It is an arithmetic number, because the mean of its divisors is an integer number (5901185083761).

Almost surely, 2^{11802370167521} is an apocalyptic number.

It is an amenable number.

11802370167521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11802370167521 is an equidigital number, since it uses as much as digits as its factorization.

11802370167521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 11802370167521 in words is "eleven trillion, eight hundred two billion, three hundred seventy million, one hundred sixty-seven thousand, five hundred twenty-one".