1606556560651 has 8 divisors (see below), whose sum is σ = 1843208863200. Its totient is φ = 1371690313728.

The previous prime is 1606556560591. The next prime is 1606556560691. The reversal of 1606556560651 is 1560656556061.

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

It is a de Polignac number, because none of the positive numbers 2^k-1606556560651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1606556560691) 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, 446511976 + ... + 446515573.

It is an arithmetic number, because the mean of its divisors is an integer number (230401107900).

Almost surely, 2^{1606556560651} is an apocalyptic number.

1606556560651 is a deficient number, since it is larger than the sum of its proper divisors (236652302549).

1606556560651 is an equidigital number, since it uses as much as digits as its factorization.

1606556560651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893027813.

The product of its (nonzero) digits is 4860000, while the sum is 52.

The spelling of 1606556560651 in words is "one trillion, six hundred six billion, five hundred fifty-six million, five hundred sixty thousand, six hundred fifty-one".