1628940498261 has 32 divisors (see below), whose sum is σ = 2272786051200. Its totient is φ = 1036420116480.

The previous prime is 1628940498223. The next prime is 1628940498277.

It is a happy number.

1628940498261 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1628940498261 - 2⁹ = 1628940497749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1628940498195 and 1628940498204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628940498221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6725025 + ... + 6963033.

It is an arithmetic number, because the mean of its divisors is an integer number (71024564100).

Almost surely, 2^{1628940498261} is an apocalyptic number.

It is an amenable number.

1628940498261 is a deficient number, since it is larger than the sum of its proper divisors (643845552939).

1628940498261 is a wasteful number, since it uses less digits than its factorization.

1628940498261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238949.

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 1628940498261 in words is "one trillion, six hundred twenty-eight billion, nine hundred forty million, four hundred ninety-eight thousand, two hundred sixty-one".