1155115038428 has 12 divisors (see below), whose sum is σ = 2176947572520. Its totient is φ = 533130017712.

The previous prime is 1155115038391. The next prime is 1155115038437. The reversal of 1155115038428 is 8248305115511.

It is a happy number.

It is a super-2 number, since 2×1155115038428² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11106875318 + ... + 11106875421.

It is an arithmetic number, because the mean of its divisors is an integer number (181412297710).

Almost surely, 2^{1155115038428} is an apocalyptic number.

It is an amenable number.

1155115038428 is a deficient number, since it is larger than the sum of its proper divisors (1021832534092).

1155115038428 is a wasteful number, since it uses less digits than its factorization.

1155115038428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22213750756 (or 22213750754 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 44.

The spelling of 1155115038428 in words is "one trillion, one hundred fifty-five billion, one hundred fifteen million, thirty-eight thousand, four hundred twenty-eight".