1155615500063 has 4 divisors (see below), whose sum is σ = 1195464310440. Its totient is φ = 1115766689688.

The previous prime is 1155615499981. The next prime is 1155615500101. The reversal of 1155615500063 is 3600055165511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1155615500063 - 2³⁸ = 880737593119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155615509063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19924405145 + ... + 19924405202.

It is an arithmetic number, because the mean of its divisors is an integer number (298866077610).

Almost surely, 2^{1155615500063} is an apocalyptic number.

1155615500063 is a deficient number, since it is larger than the sum of its proper divisors (39848810377).

1155615500063 is an equidigital number, since it uses as much as digits as its factorization.

1155615500063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39848810376.

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 1155615500063 in words is "one trillion, one hundred fifty-five billion, six hundred fifteen million, five hundred thousand, sixty-three".