1155428230815 has 48 divisors (see below), whose sum is σ = 2014618484736. Its totient is φ = 612578635200.

The previous prime is 1155428230771. The next prime is 1155428230841. The reversal of 1155428230815 is 5180328245511.

It is a happy number.

1155428230815 is a `hidden beast` number, since 1 + 1 + 5 + 54 + 282 + 308 + 15 = 666.

It is not a de Polignac number, because 1155428230815 - 2⁶ = 1155428230751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12597552 + ... + 12688938.

It is an arithmetic number, because the mean of its divisors is an integer number (41971218432).

Almost surely, 2^{1155428230815} is an apocalyptic number.

1155428230815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1155428230815 is a deficient number, since it is larger than the sum of its proper divisors (859190253921).

1155428230815 is a wasteful number, since it uses less digits than its factorization.

1155428230815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93060 (or 93057 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 1155428230815 in words is "one trillion, one hundred fifty-five billion, four hundred twenty-eight million, two hundred thirty thousand, eight hundred fifteen".