36993888917 has 2 divisors, whose sum is σ = 36993888918. Its totient is φ = 36993888916.

The previous prime is 36993888881. The next prime is 36993888929. The reversal of 36993888917 is 71988839963.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19557742801 + 17436146116 = 139849^2 + 132046^2 .

It is an emirp because it is prime and its reverse (71988839963) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36993888917 - 2¹² = 36993884821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36993888937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18496944458 + 18496944459.

It is an arithmetic number, because the mean of its divisors is an integer number (18496944459).

Almost surely, 2^36993888917 is an apocalyptic number.

It is an amenable number.

36993888917 is a deficient number, since it is larger than the sum of its proper divisors (1).

36993888917 is an equidigital number, since it uses as much as digits as its factorization.

36993888917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141087744, while the sum is 71.

The spelling of 36993888917 in words is "thirty-six billion, nine hundred ninety-three million, eight hundred eighty-eight thousand, nine hundred seventeen".