1138160012778 has 12 divisors (see below), whose sum is σ = 2466013361058. Its totient is φ = 379386670920.

The previous prime is 1138160012771. The next prime is 1138160012831. The reversal of 1138160012778 is 8772100618311.

1138160012778 is a `hidden beast` number, since 1 + 1 + 38 + 1 + 600 + 1 + 2 + 7 + 7 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 787526680329 + 350633332449 = 887427^2 + 592143^2 .

It is not an unprimeable number, because it can be changed into a prime (1138160012771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31615555893 + ... + 31615555928.

Almost surely, 2^{1138160012778} is an apocalyptic number.

1138160012778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1138160012778 is an abundant number, since it is smaller than the sum of its proper divisors (1327853348280).

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

1138160012778 is a wasteful number, since it uses less digits than its factorization.

1138160012778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63231111829 (or 63231111826 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The spelling of 1138160012778 in words is "one trillion, one hundred thirty-eight billion, one hundred sixty million, twelve thousand, seven hundred seventy-eight".