36662640491 has 2 divisors, whose sum is σ = 36662640492. Its totient is φ = 36662640490.

The previous prime is 36662640479. The next prime is 36662640493. The reversal of 36662640491 is 19404626663.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36662640491 is a prime.

It is a Sophie Germain prime.

Together with 36662640493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36662640493) 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, 18331320245 + 18331320246.

It is an arithmetic number, because the mean of its divisors is an integer number (18331320246).

Almost surely, 2^36662640491 is an apocalyptic number.

36662640491 is a deficient number, since it is larger than the sum of its proper divisors (1).

36662640491 is an equidigital number, since it uses as much as digits as its factorization.

36662640491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 36662640491 in words is "thirty-six billion, six hundred sixty-two million, six hundred forty thousand, four hundred ninety-one".