68370047778 has 32 divisors (see below), whose sum is σ = 137052000000. Its totient is φ = 22738074896.

The previous prime is 68370047777. The next prime is 68370047783. The reversal of 68370047778 is 87774007386.

68370047778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (68370047777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9113473 + ... + 9120971.

It is an arithmetic number, because the mean of its divisors is an integer number (4282875000).

Almost surely, 2^68370047778 is an apocalyptic number.

68370047778 is an abundant number, since it is smaller than the sum of its proper divisors (68681952222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68370047778 is a wasteful number, since it uses less digits than its factorization.

68370047778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10766.

The product of its (nonzero) digits is 11063808, while the sum is 57.

The spelling of 68370047778 in words is "sixty-eight billion, three hundred seventy million, forty-seven thousand, seven hundred seventy-eight".