1606834837281 has 4 divisors (see below), whose sum is σ = 2142446449712. Its totient is φ = 1071223224852.

The previous prime is 1606834837277. The next prime is 1606834837291. The reversal of 1606834837281 is 1827384386061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1606834837281 - 2² = 1606834837277 is a prime.

It is a super-2 number, since 2×1606834837281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1606834837241) 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, 267805806211 + ... + 267805806216.

It is an arithmetic number, because the mean of its divisors is an integer number (535611612428).

Almost surely, 2^{1606834837281} is an apocalyptic number.

It is an amenable number.

1606834837281 is a deficient number, since it is larger than the sum of its proper divisors (535611612431).

1606834837281 is an equidigital number, since it uses as much as digits as its factorization.

1606834837281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535611612430.

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 1606834837281 in words is "one trillion, six hundred six billion, eight hundred thirty-four million, eight hundred thirty-seven thousand, two hundred eighty-one".