1102564243591 has 4 divisors (see below), whose sum is σ = 1102566346632. Its totient is φ = 1102562140552.

The previous prime is 1102564243541. The next prime is 1102564243597. The reversal of 1102564243591 is 1953424652011.

It is a happy number.

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 1102564243591 - 2⁷ = 1102564243463 is a prime.

It is a super-2 number, since 2×1102564243591² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102564243597) 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 3 ways as a sum of consecutive naturals, for example, 441840 + ... + 1549306.

It is an arithmetic number, because the mean of its divisors is an integer number (275641586658).

Almost surely, 2^{1102564243591} is an apocalyptic number.

1102564243591 is a deficient number, since it is larger than the sum of its proper divisors (2103041).

1102564243591 is an equidigital number, since it uses as much as digits as its factorization.

1102564243591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103040.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 1102564243591 in words is "one trillion, one hundred two billion, five hundred sixty-four million, two hundred forty-three thousand, five hundred ninety-one".