1138845778707 has 32 divisors (see below), whose sum is σ = 1888141921792. Its totient is φ = 594516962304.

The previous prime is 1138845778687. The next prime is 1138845778739. The reversal of 1138845778707 is 7078775488311.

It is a happy number.

It is not a de Polignac number, because 1138845778707 - 2⁸ = 1138845778451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1138845778787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21476593 + ... + 21529554.

It is an arithmetic number, because the mean of its divisors is an integer number (59004435056).

Almost surely, 2^{1138845778707} is an apocalyptic number.

1138845778707 is a deficient number, since it is larger than the sum of its proper divisors (749296143085).

1138845778707 is a wasteful number, since it uses less digits than its factorization.

1138845778707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43006267.

The product of its (nonzero) digits is 73758720, while the sum is 66.

The spelling of 1138845778707 in words is "one trillion, one hundred thirty-eight billion, eight hundred forty-five million, seven hundred seventy-eight thousand, seven hundred seven".