9994087312639 has 2 divisors, whose sum is σ = 9994087312640. Its totient is φ = 9994087312638.

The previous prime is 9994087312577. The next prime is 9994087312667. The reversal of 9994087312639 is 9362137804999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9994087312639 - 2⁷ = 9994087312511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9994085312639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4997043656319 + 4997043656320.

It is an arithmetic number, because the mean of its divisors is an integer number (4997043656320).

Almost surely, 2^{9994087312639} is an apocalyptic number.

9994087312639 is a deficient number, since it is larger than the sum of its proper divisors (1).

9994087312639 is an equidigital number, since it uses as much as digits as its factorization.

9994087312639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158723712, while the sum is 70.

The spelling of 9994087312639 in words is "nine trillion, nine hundred ninety-four billion, eighty-seven million, three hundred twelve thousand, six hundred thirty-nine".