1129511779618 has 4 divisors (see below), whose sum is σ = 1694267669430. Its totient is φ = 564755889808.

The previous prime is 1129511779559. The next prime is 1129511779621. The reversal of 1129511779618 is 8169771159211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1087479809329 + 42031970289 = 1042823^2 + 205017^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282377944903 + ... + 282377944906.

Almost surely, 2^{1129511779618} is an apocalyptic number.

1129511779618 is a deficient number, since it is larger than the sum of its proper divisors (564755889812).

1129511779618 is an equidigital number, since it uses as much as digits as its factorization.

1129511779618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564755889811.

The product of its digits is 1905120, while the sum is 58.

The spelling of 1129511779618 in words is "one trillion, one hundred twenty-nine billion, five hundred eleven million, seven hundred seventy-nine thousand, six hundred eighteen".