1138771204665 has 8 divisors (see below), whose sum is σ = 1822033927488. Its totient is φ = 607344642480.

The previous prime is 1138771204651. The next prime is 1138771204691. The reversal of 1138771204665 is 5664021778311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1138771204665 - 2⁶ = 1138771204601 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37959040141 + ... + 37959040170.

It is an arithmetic number, because the mean of its divisors is an integer number (227754240936).

Almost surely, 2^{1138771204665} is an apocalyptic number.

1138771204665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1138771204665 is a deficient number, since it is larger than the sum of its proper divisors (683262722823).

1138771204665 is an equidigital number, since it uses as much as digits as its factorization.

1138771204665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75918080319.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 1138771204665 in words is "one trillion, one hundred thirty-eight billion, seven hundred seventy-one million, two hundred four thousand, six hundred sixty-five".