36664570615181 has 2 divisors, whose sum is σ = 36664570615182. Its totient is φ = 36664570615180.

The previous prime is 36664570615159. The next prime is 36664570615219. The reversal of 36664570615181 is 18151607546663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20992203975625 + 15672366639556 = 4581725^2 + 3958834^2 .

It is a cyclic number.

It is not a de Polignac number, because 36664570615181 - 2¹⁴ = 36664570598797 is a prime.

It is a super-2 number, since 2×36664570615181² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36664570615181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36664570615381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18332285307590 + 18332285307591.

It is an arithmetic number, because the mean of its divisors is an integer number (18332285307591).

Almost surely, 2^{36664570615181} is an apocalyptic number.

It is an amenable number.

36664570615181 is a deficient number, since it is larger than the sum of its proper divisors (1).

36664570615181 is an equidigital number, since it uses as much as digits as its factorization.

36664570615181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 59.

The spelling of 36664570615181 in words is "thirty-six trillion, six hundred sixty-four billion, five hundred seventy million, six hundred fifteen thousand, one hundred eighty-one".