1606463900985 has 32 divisors (see below), whose sum is σ = 2594032975872. Its totient is φ = 848901816000.

The previous prime is 1606463900947. The next prime is 1606463901013. The reversal of 1606463900985 is 5890093646061.

It is not a de Polignac number, because 1606463900985 - 2¹³ = 1606463892793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 869212 + ... + 1992098.

It is an arithmetic number, because the mean of its divisors is an integer number (81063530496).

Almost surely, 2^{1606463900985} is an apocalyptic number.

1606463900985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1606463900985 is a deficient number, since it is larger than the sum of its proper divisors (987569074887).

1606463900985 is a wasteful number, since it uses less digits than its factorization.

1606463900985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123773.

The product of its (nonzero) digits is 8398080, while the sum is 57.

The spelling of 1606463900985 in words is "one trillion, six hundred six billion, four hundred sixty-three million, nine hundred thousand, nine hundred eighty-five".