36521354137 has 2 divisors, whose sum is σ = 36521354138. Its totient is φ = 36521354136.

The previous prime is 36521354119. The next prime is 36521354141. The reversal of 36521354137 is 73145312563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21991703616 + 14529650521 = 148296^2 + 120539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36521354137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36521354137.

It is not a weakly prime, because it can be changed into another prime (36521354437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18260677068 + 18260677069.

It is an arithmetic number, because the mean of its divisors is an integer number (18260677069).

Almost surely, 2^36521354137 is an apocalyptic number.

It is an amenable number.

36521354137 is a deficient number, since it is larger than the sum of its proper divisors (1).

36521354137 is an equidigital number, since it uses as much as digits as its factorization.

36521354137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 40.

The spelling of 36521354137 in words is "thirty-six billion, five hundred twenty-one million, three hundred fifty-four thousand, one hundred thirty-seven".