1155845428503 has 8 divisors (see below), whose sum is σ = 1631781781488. Its totient is φ = 725236347264.

The previous prime is 1155845428447. The next prime is 1155845428519. The reversal of 1155845428503 is 3058245485511.

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

It is not a de Polignac number, because 1155845428503 - 2¹³ = 1155845420311 is a prime.

It is a super-3 number, since 3×1155845428503³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 22663635853 = 1155845428503 / (1 + 1 + 5 + 5 + 8 + 4 + 5 + 4 + 2 + 8 + 5 + 0 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155845428523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11331817876 + ... + 11331817977.

It is an arithmetic number, because the mean of its divisors is an integer number (203972722686).

Almost surely, 2^{1155845428503} is an apocalyptic number.

1155845428503 is a deficient number, since it is larger than the sum of its proper divisors (475936352985).

1155845428503 is a wasteful number, since it uses less digits than its factorization.

1155845428503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22663635873.

The product of its (nonzero) digits is 3840000, while the sum is 51.

The spelling of 1155845428503 in words is "one trillion, one hundred fifty-five billion, eight hundred forty-five million, four hundred twenty-eight thousand, five hundred three".