4432991978539 has 2 divisors, whose sum is σ = 4432991978540. Its totient is φ = 4432991978538.

The previous prime is 4432991978509. The next prime is 4432991978543. The reversal of 4432991978539 is 9358791992344.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4432991978539 - 2¹³ = 4432991970347 is a prime.

It is a super-2 number, since 2×4432991978539² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4432991978509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2216495989269 + 2216495989270.

It is an arithmetic number, because the mean of its divisors is an integer number (2216495989270).

Almost surely, 2^{4432991978539} is an apocalyptic number.

4432991978539 is a deficient number, since it is larger than the sum of its proper divisors (1).

4432991978539 is an equidigital number, since it uses as much as digits as its factorization.

4432991978539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529079040, while the sum is 73.

The spelling of 4432991978539 in words is "four trillion, four hundred thirty-two billion, nine hundred ninety-one million, nine hundred seventy-eight thousand, five hundred thirty-nine".