461024978878439 has 2 divisors, whose sum is σ = 461024978878440. Its totient is φ = 461024978878438.

The previous prime is 461024978878379. The next prime is 461024978878481. The reversal of 461024978878439 is 934878879420164.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-461024978878439 is a prime.

It is a super-3 number, since 3×461024978878439³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461024978838439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230512489439219 + 230512489439220.

It is an arithmetic number, because the mean of its divisors is an integer number (230512489439220).

Almost surely, 2^{461024978878439} is an apocalyptic number.

461024978878439 is a deficient number, since it is larger than the sum of its proper divisors (1).

461024978878439 is an equidigital number, since it uses as much as digits as its factorization.

461024978878439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4682022912, while the sum is 80.

The spelling of 461024978878439 in words is "four hundred sixty-one trillion, twenty-four billion, nine hundred seventy-eight million, eight hundred seventy-eight thousand, four hundred thirty-nine".