1005859602551 has 4 divisors (see below), whose sum is σ = 1024838085672. Its totient is φ = 986881119432.

The previous prime is 1005859602529. The next prime is 1005859602557. The reversal of 1005859602551 is 1552069585001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005859602551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1005859602496 and 1005859602505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005859602557) 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, 9489241481 + ... + 9489241586.

It is an arithmetic number, because the mean of its divisors is an integer number (256209521418).

Almost surely, 2^{1005859602551} is an apocalyptic number.

1005859602551 is a deficient number, since it is larger than the sum of its proper divisors (18978483121).

1005859602551 is an equidigital number, since it uses as much as digits as its factorization.

1005859602551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18978483120.

The product of its (nonzero) digits is 540000, while the sum is 47.

The spelling of 1005859602551 in words is "one trillion, five billion, eight hundred fifty-nine million, six hundred two thousand, five hundred fifty-one".