1135555556779 has 8 divisors (see below), whose sum is σ = 1322264152800. Its totient is φ = 954968554176.

The previous prime is 1135555556761. The next prime is 1135555556851. The reversal of 1135555556779 is 9776555555311.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1135555556779 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1135555556779.

It is not an unprimeable number, because it can be changed into a prime (1135555553779) 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, 1530397954 + ... + 1530398695.

It is an arithmetic number, because the mean of its divisors is an integer number (165283019100).

Almost surely, 2^{1135555556779} is an apocalyptic number.

1135555556779 is a deficient number, since it is larger than the sum of its proper divisors (186708596021).

1135555556779 is an equidigital number, since it uses as much as digits as its factorization.

1135555556779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060796709.

The product of its digits is 124031250, while the sum is 64.

The spelling of 1135555556779 in words is "one trillion, one hundred thirty-five billion, five hundred fifty-five million, five hundred fifty-six thousand, seven hundred seventy-nine".