3646801619987 has 2 divisors, whose sum is σ = 3646801619988. Its totient is φ = 3646801619986.

The previous prime is 3646801619953. The next prime is 3646801620079. The reversal of 3646801619987 is 7899161086463.

It is a weak prime.

It is an emirp because it is prime and its reverse (7899161086463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3646801619987 - 2²⁰ = 3646800571411 is a prime.

It is not a weakly prime, because it can be changed into another prime (3646801619917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1823400809993 + 1823400809994.

It is an arithmetic number, because the mean of its divisors is an integer number (1823400809994).

Almost surely, 2^{3646801619987} is an apocalyptic number.

3646801619987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3646801619987 is an equidigital number, since it uses as much as digits as its factorization.

3646801619987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94058496, while the sum is 68.

The spelling of 3646801619987 in words is "three trillion, six hundred forty-six billion, eight hundred one million, six hundred nineteen thousand, nine hundred eighty-seven".