238204507978 has 16 divisors (see below), whose sum is σ = 366890621760. Its totient is φ = 115946832096.

The previous prime is 238204507967. The next prime is 238204507993. The reversal of 238204507978 is 879705402832.

It is a happy number.

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, 9787275 + ... + 9811582.

It is an arithmetic number, because the mean of its divisors is an integer number (22930663860).

Almost surely, 2^238204507978 is an apocalyptic number.

238204507978 is a deficient number, since it is larger than the sum of its proper divisors (128686113782).

238204507978 is a wasteful number, since it uses less digits than its factorization.

238204507978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19599021.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 238204507978 in words is "two hundred thirty-eight billion, two hundred four million, five hundred seven thousand, nine hundred seventy-eight".