1155346480557 has 40 divisors (see below), whose sum is σ = 1817474324160. Its totient is φ = 729391210560.

The previous prime is 1155346480553. The next prime is 1155346480597. The reversal of 1155346480557 is 7550846435511.

1155346480557 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 3 + 4 + 6 + 4 + 80 + 557 = 666.

It is not a de Polignac number, because 1155346480557 - 2² = 1155346480553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155346480553) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3602928 + ... + 3910470.

It is an arithmetic number, because the mean of its divisors is an integer number (45436858104).

Almost surely, 2^{1155346480557} is an apocalyptic number.

It is an amenable number.

1155346480557 is a deficient number, since it is larger than the sum of its proper divisors (662127843603).

1155346480557 is a wasteful number, since it uses less digits than its factorization.

1155346480557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310015 (or 310006 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 54.

The spelling of 1155346480557 in words is "one trillion, one hundred fifty-five billion, three hundred forty-six million, four hundred eighty thousand, five hundred fifty-seven".