1328258641541 has 8 divisors (see below), whose sum is σ = 1438896482520. Its totient is φ = 1226084897856.

The previous prime is 1328258641531. The next prime is 1328258641579. The reversal of 1328258641541 is 1451468528231.

It can be written as a sum of positive squares in 4 ways, for example, as 677419533025 + 650839108516 = 823055^2 + 806746^2 .

It is not a de Polignac number, because 1328258641541 - 2⁶ = 1328258641477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1328258641541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328258641531) 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, 302286980 + ... + 302291373.

It is an arithmetic number, because the mean of its divisors is an integer number (179862060315).

Almost surely, 2^{1328258641541} is an apocalyptic number.

It is an amenable number.

1328258641541 is a deficient number, since it is larger than the sum of its proper divisors (110637840979).

1328258641541 is an frugal number, since it uses more digits than its factorization.

1328258641541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604578392 (or 604578366 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 50.

The spelling of 1328258641541 in words is "one trillion, three hundred twenty-eight billion, two hundred fifty-eight million, six hundred forty-one thousand, five hundred forty-one".