36521187541 has 2 divisors, whose sum is σ = 36521187542. Its totient is φ = 36521187540.

The previous prime is 36521187529. The next prime is 36521187569. The reversal of 36521187541 is 14578112563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35025122500 + 1496065041 = 187150^2 + 38679^2 .

It is a cyclic number.

It is not a de Polignac number, because 36521187541 - 2⁹ = 36521187029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36521187341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18260593770 + 18260593771.

It is an arithmetic number, because the mean of its divisors is an integer number (18260593771).

Almost surely, 2^36521187541 is an apocalyptic number.

It is an amenable number.

36521187541 is a deficient number, since it is larger than the sum of its proper divisors (1).

36521187541 is an equidigital number, since it uses as much as digits as its factorization.

36521187541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The spelling of 36521187541 in words is "thirty-six billion, five hundred twenty-one million, one hundred eighty-seven thousand, five hundred forty-one".