978243263955 has 96 divisors (see below), whose sum is σ = 1726947331200. Its totient is φ = 512200765440.

The previous prime is 978243263927. The next prime is 978243263969. The reversal of 978243263955 is 559362342879.

978243263955 is a `hidden beast` number, since 97 + 8 + 2 + 432 + 63 + 9 + 55 = 666.

It is not a de Polignac number, because 978243263955 - 2⁶ = 978243263891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 978243263892 and 978243263901.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 278620650 + ... + 278624160.

It is an arithmetic number, because the mean of its divisors is an integer number (17989034700).

Almost surely, 2^978243263955 is an apocalyptic number.

978243263955 is a deficient number, since it is larger than the sum of its proper divisors (748704067245).

978243263955 is a wasteful number, since it uses less digits than its factorization.

978243263955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141 (or 4138 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 63.

The spelling of 978243263955 in words is "nine hundred seventy-eight billion, two hundred forty-three million, two hundred sixty-three thousand, nine hundred fifty-five".