30968843878 has 48 divisors (see below), whose sum is σ = 54779042880. Its totient is φ = 13090581504.

The previous prime is 30968843827. The next prime is 30968843903. The reversal of 30968843878 is 87834886903.

It is a super-2 number, since 2×30968843878² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 11247750 + ... + 11250502.

It is an arithmetic number, because the mean of its divisors is an integer number (1141230060).

Almost surely, 2^30968843878 is an apocalyptic number.

30968843878 is a deficient number, since it is larger than the sum of its proper divisors (23810199002).

30968843878 is a wasteful number, since it uses less digits than its factorization.

30968843878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4301 (or 4294 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 64.

The spelling of 30968843878 in words is "thirty billion, nine hundred sixty-eight million, eight hundred forty-three thousand, eight hundred seventy-eight".