10239984991487 has 2 divisors, whose sum is σ = 10239984991488. Its totient is φ = 10239984991486.

The previous prime is 10239984991387. The next prime is 10239984991501. The reversal of 10239984991487 is 78419948993201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10239984991487 - 2²⁸ = 10239716556031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10239984991387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5119992495743 + 5119992495744.

It is an arithmetic number, because the mean of its divisors is an integer number (5119992495744).

Almost surely, 2^{10239984991487} is an apocalyptic number.

10239984991487 is a deficient number, since it is larger than the sum of its proper divisors (1).

10239984991487 is an equidigital number, since it uses as much as digits as its factorization.

10239984991487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282175488, while the sum is 74.

The spelling of 10239984991487 in words is "ten trillion, two hundred thirty-nine billion, nine hundred eighty-four million, nine hundred ninety-one thousand, four hundred eighty-seven".