1178655228138 has 16 divisors (see below), whose sum is σ = 2358529988256. Its totient is φ = 392681820720.

The previous prime is 1178655228133. The next prime is 1178655228151. The reversal of 1178655228138 is 8318225568711.

It is not an unprimeable number, because it can be changed into a prime (1178655228133) 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, 50801268 + ... + 50824463.

It is an arithmetic number, because the mean of its divisors is an integer number (147408124266).

Almost surely, 2^{1178655228138} is an apocalyptic number.

1178655228138 is an abundant number, since it is smaller than the sum of its proper divisors (1179874760118).

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

1178655228138 is a wasteful number, since it uses less digits than its factorization.

1178655228138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101627669.

The product of its digits is 6451200, while the sum is 57.

The spelling of 1178655228138 in words is "one trillion, one hundred seventy-eight billion, six hundred fifty-five million, two hundred twenty-eight thousand, one hundred thirty-eight".