245902678391 has 2 divisors, whose sum is σ = 245902678392. Its totient is φ = 245902678390.

The previous prime is 245902678379. The next prime is 245902678421. The reversal of 245902678391 is 193876209542.

245902678391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245902678391 - 2¹⁰ = 245902677367 is a prime.

It is a super-3 number, since 3×245902678391³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245902678591) 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, 122951339195 + 122951339196.

It is an arithmetic number, because the mean of its divisors is an integer number (122951339196).

It is a 2-persistent number, because it is pandigital, and so is 2⋅245902678391 = 491805356782, but 3⋅245902678391 = 737708035173 is not.

Almost surely, 2^245902678391 is an apocalyptic number.

245902678391 is a deficient number, since it is larger than the sum of its proper divisors (1).

245902678391 is an equidigital number, since it uses as much as digits as its factorization.

245902678391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 245902678391 in words is "two hundred forty-five billion, nine hundred two million, six hundred seventy-eight thousand, three hundred ninety-one".