138073298978 has 16 divisors (see below), whose sum is σ = 208092175200. Its totient is φ = 68709506976.

The previous prime is 138073298977. The next prime is 138073299017. The reversal of 138073298978 is 879892370831.

It is not an unprimeable number, because it can be changed into a prime (138073298977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991073 + ... + 1121771.

It is an arithmetic number, because the mean of its divisors is an integer number (13005760950).

Almost surely, 2^138073298978 is an apocalyptic number.

138073298978 is a deficient number, since it is larger than the sum of its proper divisors (70018876222).

138073298978 is a wasteful number, since it uses less digits than its factorization.

138073298978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133201.

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 138073298978 in words is "one hundred thirty-eight billion, seventy-three million, two hundred ninety-eight thousand, nine hundred seventy-eight".