1152721563863 has 4 divisors (see below), whose sum is σ = 1152792216960. Its totient is φ = 1152650910768.

The previous prime is 1152721563823. The next prime is 1152721563913. The reversal of 1152721563863 is 3683651272511.

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 1152721563863 - 2⁸ = 1152721563607 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 (1152721563823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35302070 + ... + 35334707.

It is an arithmetic number, because the mean of its divisors is an integer number (288198054240).

Almost surely, 2^{1152721563863} is an apocalyptic number.

1152721563863 is a deficient number, since it is larger than the sum of its proper divisors (70653097).

1152721563863 is an equidigital number, since it uses as much as digits as its factorization.

1152721563863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70653096.

The product of its digits is 1814400, while the sum is 50.

The spelling of 1152721563863 in words is "one trillion, one hundred fifty-two billion, seven hundred twenty-one million, five hundred sixty-three thousand, eight hundred sixty-three".