36908761991 has 2 divisors, whose sum is σ = 36908761992. Its totient is φ = 36908761990.

The previous prime is 36908761969. The next prime is 36908762021. The reversal of 36908761991 is 19916780963.

It is a weak prime.

It is an emirp because it is prime and its reverse (19916780963) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36908761991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36908761991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36908761921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18454380995 + 18454380996.

It is an arithmetic number, because the mean of its divisors is an integer number (18454380996).

Almost surely, 2^36908761991 is an apocalyptic number.

36908761991 is a deficient number, since it is larger than the sum of its proper divisors (1).

36908761991 is an equidigital number, since it uses as much as digits as its factorization.

36908761991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 59.

The spelling of 36908761991 in words is "thirty-six billion, nine hundred eight million, seven hundred sixty-one thousand, nine hundred ninety-one".