845240623839 has 12 divisors (see below), whose sum is σ = 1226234581000. Its totient is φ = 561033076464.

The previous prime is 845240623823. The next prime is 845240623853. The reversal of 845240623839 is 938326042548.

845240623839 is a `hidden beast` number, since 8 + 4 + 5 + 2 + 4 + 0 + 623 + 8 + 3 + 9 = 666.

It is not a de Polignac number, because 845240623839 - 2⁴ = 845240623823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845240623939) 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 in 11 ways as a sum of consecutive naturals, for example, 205053889 + ... + 205058010.

Almost surely, 2^845240623839 is an apocalyptic number.

845240623839 is a deficient number, since it is larger than the sum of its proper divisors (380993957161).

845240623839 is a wasteful number, since it uses less digits than its factorization.

845240623839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410112134 (or 410112131 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 845240623839 in words is "eight hundred forty-five billion, two hundred forty million, six hundred twenty-three thousand, eight hundred thirty-nine".