2826555189121 has 4 divisors (see below), whose sum is σ = 2826560236500. Its totient is φ = 2826550141744.

The previous prime is 2826555189113. The next prime is 2826555189137. The reversal of 2826555189121 is 1219815556282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2200146257521 + 626408931600 = 1483289^2 + 791460^2 .

It is a cyclic number.

It is not a de Polignac number, because 2826555189121 - 2³ = 2826555189113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2826555189221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561366 + ... + 2844463.

It is an arithmetic number, because the mean of its divisors is an integer number (706640059125).

Almost surely, 2^{2826555189121} is an apocalyptic number.

It is an amenable number.

2826555189121 is a deficient number, since it is larger than the sum of its proper divisors (5047379).

2826555189121 is an equidigital number, since it uses as much as digits as its factorization.

2826555189121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5047378.

The product of its digits is 3456000, while the sum is 55.

The spelling of 2826555189121 in words is "two trillion, eight hundred twenty-six billion, five hundred fifty-five million, one hundred eighty-nine thousand, one hundred twenty-one".