103118844978 has 18 divisors (see below), whose sum is σ = 223427116029. Its totient is φ = 34372494192.

The previous prime is 103118844971. The next prime is 103118844979. The reversal of 103118844978 is 879448811301.

103118844978 is a `hidden beast` number, since 10 + 3 + 1 + 188 + 449 + 7 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 57543853689 + 45574991289 = 239883^2 + 213483^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=227067.

It is not an unprimeable number, because it can be changed into a prime (103118844971) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1324558 + ... + 1400246.

Almost surely, 2^103118844978 is an apocalyptic number.

103118844978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

103118844978 is an abundant number, since it is smaller than the sum of its proper divisors (120308271051).

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

103118844978 is an frugal number, since it uses more digits than its factorization.

103118844978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151386 (or 75694 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 103118844978 in words is "one hundred three billion, one hundred eighteen million, eight hundred forty-four thousand, nine hundred seventy-eight".