68209778930 has 16 divisors (see below), whose sum is σ = 123512800320. Its totient is φ = 27120534192.

The previous prime is 68209778893. The next prime is 68209778951. The reversal of 68209778930 is 3987790286.

It is a self number, because there is not a number n which added to its sum of digits gives 68209778930.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20420420 + ... + 20423759.

It is an arithmetic number, because the mean of its divisors is an integer number (7719550020).

Almost surely, 2^68209778930 is an apocalyptic number.

68209778930 is a deficient number, since it is larger than the sum of its proper divisors (55303021390).

68209778930 is a wasteful number, since it uses less digits than its factorization.

68209778930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40844353.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 68209778930 in words is "sixty-eight billion, two hundred nine million, seven hundred seventy-eight thousand, nine hundred thirty".