3209113984987 has 2 divisors, whose sum is σ = 3209113984988. Its totient is φ = 3209113984986.

The previous prime is 3209113984961. The next prime is 3209113984997. The reversal of 3209113984987 is 7894893119023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3209113984987 - 2²³ = 3209105596379 is a prime.

It is a super-2 number, since 2×3209113984987² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3209113984997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1604556992493 + 1604556992494.

It is an arithmetic number, because the mean of its divisors is an integer number (1604556992494).

Almost surely, 2^{3209113984987} is an apocalyptic number.

3209113984987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3209113984987 is an equidigital number, since it uses as much as digits as its factorization.

3209113984987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 64.

The spelling of 3209113984987 in words is "three trillion, two hundred nine billion, one hundred thirteen million, nine hundred eighty-four thousand, nine hundred eighty-seven".