1610000551121 has 4 divisors (see below), whose sum is σ = 1619641273152. Its totient is φ = 1600359829092.

The previous prime is 1610000551063. The next prime is 1610000551127. The reversal of 1610000551121 is 1211550000161.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1610000551121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1610000551127) 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, 4820360765 + ... + 4820361098.

It is an arithmetic number, because the mean of its divisors is an integer number (404910318288).

Almost surely, 2^{1610000551121} is an apocalyptic number.

It is an amenable number.

1610000551121 is a deficient number, since it is larger than the sum of its proper divisors (9640722031).

1610000551121 is an equidigital number, since it uses as much as digits as its factorization.

1610000551121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9640722030.

The product of its (nonzero) digits is 300, while the sum is 23.

Adding to 1610000551121 its reverse (1211550000161), we get a palindrome (2821550551282).

The spelling of 1610000551121 in words is "one trillion, six hundred ten billion, five hundred fifty-one thousand, one hundred twenty-one".