11721285622587 has 8 divisors (see below), whose sum is σ = 15660471963136. Its totient is φ = 7798144848552.

The previous prime is 11721285622583. The next prime is 11721285622589. The reversal of 11721285622587 is 78522658212711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11721285622587 - 2² = 11721285622583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11721285622583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4011389923 + ... + 4011392844.

It is an arithmetic number, because the mean of its divisors is an integer number (1957558995392).

Almost surely, 2^{11721285622587} is an apocalyptic number.

11721285622587 is a deficient number, since it is larger than the sum of its proper divisors (3939186340549).

11721285622587 is an equidigital number, since it uses as much as digits as its factorization.

11721285622587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8022783257.

The product of its digits is 7526400, while the sum is 57.

The spelling of 11721285622587 in words is "eleven trillion, seven hundred twenty-one billion, two hundred eighty-five million, six hundred twenty-two thousand, five hundred eighty-seven".