978442065837 has 24 divisors (see below), whose sum is σ = 1466334548224. Its totient is φ = 651989979648.

The previous prime is 978442065817. The next prime is 978442065859. The reversal of 978442065837 is 738560244879.

978442065837 is a `hidden beast` number, since 9 + 7 + 8 + 4 + 42 + 0 + 6 + 583 + 7 = 666.

It is not a de Polignac number, because 978442065837 - 2¹⁰ = 978442064813 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 (978442065817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 418708 + ... + 1460205.

Almost surely, 2^978442065837 is an apocalyptic number.

It is an amenable number.

978442065837 is a deficient number, since it is larger than the sum of its proper divisors (487892482387).

978442065837 is a wasteful number, since it uses less digits than its factorization.

978442065837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881071 (or 1881059 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 63.

The spelling of 978442065837 in words is "nine hundred seventy-eight billion, four hundred forty-two million, sixty-five thousand, eight hundred thirty-seven".