36500137535861 has 2 divisors, whose sum is σ = 36500137535862. Its totient is φ = 36500137535860.

The previous prime is 36500137535837. The next prime is 36500137535941. The reversal of 36500137535861 is 16853573100563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25359936298225 + 11140201237636 = 5035865^2 + 3337694^2 .

It is a cyclic number.

It is not a de Polignac number, because 36500137535861 - 2¹⁴ = 36500137519477 is a prime.

It is a super-2 number, since 2×36500137535861² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36500137585861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18250068767930 + 18250068767931.

It is an arithmetic number, because the mean of its divisors is an integer number (18250068767931).

Almost surely, 2^{36500137535861} is an apocalyptic number.

It is an amenable number.

36500137535861 is a deficient number, since it is larger than the sum of its proper divisors (1).

36500137535861 is an equidigital number, since it uses as much as digits as its factorization.

36500137535861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804000, while the sum is 53.

The spelling of 36500137535861 in words is "thirty-six trillion, five hundred billion, one hundred thirty-seven million, five hundred thirty-five thousand, eight hundred sixty-one".