1606772181810 has 64 divisors (see below), whose sum is σ = 4005946554624. Its totient is φ = 412134374400.

The previous prime is 1606772181757. The next prime is 1606772181827. The reversal of 1606772181810 is 181812776061.

It is a super-2 number, since 2×1606772181810² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1606772181810.

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, 9112099 + ... + 9286758.

It is an arithmetic number, because the mean of its divisors is an integer number (62592914916).

Almost surely, 2^{1606772181810} is an apocalyptic number.

1606772181810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1606772181810 is an abundant number, since it is smaller than the sum of its proper divisors (2399174372814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1606772181810 is a wasteful number, since it uses less digits than its factorization.

1606772181810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18398979.

The product of its (nonzero) digits is 225792, while the sum is 48.

The spelling of 1606772181810 in words is "one trillion, six hundred six billion, seven hundred seventy-two million, one hundred eighty-one thousand, eight hundred ten".