1155346428387 has 8 divisors (see below), whose sum is σ = 1631077310736. Its totient is φ = 724923249152.

The previous prime is 1155346428343. The next prime is 1155346428469. The reversal of 1155346428387 is 7838246435511.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1155346428387 - 2⁶ = 1155346428323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155346424387) 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, 11326925718 + ... + 11326925819.

It is an arithmetic number, because the mean of its divisors is an integer number (203884663842).

Almost surely, 2^{1155346428387} is an apocalyptic number.

1155346428387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1155346428387 is a deficient number, since it is larger than the sum of its proper divisors (475730882349).

1155346428387 is a wasteful number, since it uses less digits than its factorization.

1155346428387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22653851557.

The product of its digits is 19353600, while the sum is 57.

The spelling of 1155346428387 in words is "one trillion, one hundred fifty-five billion, three hundred forty-six million, four hundred twenty-eight thousand, three hundred eighty-seven".