1155450553642 has 64 divisors (see below), whose sum is σ = 2296457775360. Its totient is φ = 422119296000.

The previous prime is 1155450553637. The next prime is 1155450553643. The reversal of 1155450553642 is 2463550545511.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1155450553592 and 1155450553601.

It is not an unprimeable number, because it can be changed into a prime (1155450553643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116109 + ... + 1524592.

It is an arithmetic number, because the mean of its divisors is an integer number (35882152740).

Almost surely, 2^{1155450553642} is an apocalyptic number.

1155450553642 is a deficient number, since it is larger than the sum of its proper divisors (1141007221718).

1155450553642 is a wasteful number, since it uses less digits than its factorization.

1155450553642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641007.

The product of its (nonzero) digits is 1800000, while the sum is 46.

The spelling of 1155450553642 in words is "one trillion, one hundred fifty-five billion, four hundred fifty million, five hundred fifty-three thousand, six hundred forty-two".