20027341987 has 2 divisors, whose sum is σ = 20027341988. Its totient is φ = 20027341986.

The previous prime is 20027341937. The next prime is 20027342009. The reversal of 20027341987 is 78914372002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20027341987 is a prime.

It is not a weakly prime, because it can be changed into another prime (20027341937) 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, 10013670993 + 10013670994.

It is an arithmetic number, because the mean of its divisors is an integer number (10013670994).

Almost surely, 2^20027341987 is an apocalyptic number.

20027341987 is a deficient number, since it is larger than the sum of its proper divisors (1).

20027341987 is an equidigital number, since it uses as much as digits as its factorization.

20027341987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 20027341987 in words is "twenty billion, twenty-seven million, three hundred forty-one thousand, nine hundred eighty-seven".