1006615551559 has 4 divisors (see below), whose sum is σ = 1007421490000. Its totient is φ = 1005809613120.

The previous prime is 1006615551541. The next prime is 1006615551569. The reversal of 1006615551559 is 9551555166001.

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 1006615551559 - 2²⁹ = 1006078680647 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 (1006615551569) 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, 402967347 + ... + 402969844.

It is an arithmetic number, because the mean of its divisors is an integer number (251855372500).

Almost surely, 2^{1006615551559} is an apocalyptic number.

1006615551559 is a deficient number, since it is larger than the sum of its proper divisors (805938441).

1006615551559 is an equidigital number, since it uses as much as digits as its factorization.

1006615551559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805938440.

The product of its (nonzero) digits is 1012500, while the sum is 49.

The spelling of 1006615551559 in words is "one trillion, six billion, six hundred fifteen million, five hundred fifty-one thousand, five hundred fifty-nine".