1111101043778 has 64 divisors (see below), whose sum is σ = 1875461745024. Its totient is φ = 489308352000.

The previous prime is 1111101043777. The next prime is 1111101043783. The reversal of 1111101043778 is 8773401011111.

It is a happy number.

It is a super-2 number, since 2×1111101043778² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1111101043777) 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, 151517000 + ... + 151524332.

It is an arithmetic number, because the mean of its divisors is an integer number (29304089766).

Almost surely, 2^{1111101043778} is an apocalyptic number.

1111101043778 is a deficient number, since it is larger than the sum of its proper divisors (764360701246).

1111101043778 is a wasteful number, since it uses less digits than its factorization.

1111101043778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8531.

The product of its (nonzero) digits is 4704, while the sum is 35.

Adding to 1111101043778 its reverse (8773401011111), we get a palindrome (9884502054889).

The spelling of 1111101043778 in words is "one trillion, one hundred eleven billion, one hundred one million, forty-three thousand, seven hundred seventy-eight".