2628046421081 has 8 divisors (see below), whose sum is σ = 2655428531784. Its totient is φ = 2600670205440.

The previous prime is 2628046421023. The next prime is 2628046421089. The reversal of 2628046421081 is 1801246408262.

It can be written as a sum of positive squares in 4 ways, for example, as 1788411409225 + 839635011856 = 1337315^2 + 916316^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2628046421081 - 2¹⁰ = 2628046420057 is a prime.

It is a super-2 number, since 2×2628046421081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2628046421089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574670 + ... + 2363543.

It is an arithmetic number, because the mean of its divisors is an integer number (331928566473).

Almost surely, 2^{2628046421081} is an apocalyptic number.

It is an amenable number.

2628046421081 is a deficient number, since it is larger than the sum of its proper divisors (27382110703).

2628046421081 is an equidigital number, since it uses as much as digits as its factorization.

2628046421081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947531.

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 2628046421081 in words is "two trillion, six hundred twenty-eight billion, forty-six million, four hundred twenty-one thousand, eighty-one".