1336621976541 has 18 divisors (see below), whose sum is σ = 1962845526330. Its totient is φ = 876473405280.

The previous prime is 1336621976531. The next prime is 1336621976561. The reversal of 1336621976541 is 1456791266331.

1336621976541 is a `hidden beast` number, since 1 + 3 + 3 + 6 + 6 + 2 + 1 + 97 + 6 + 541 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 234638516025 + 1101983460516 = 484395^2 + 1049754^2 .

It is not a de Polignac number, because 1336621976541 - 2¹⁷ = 1336621845469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1336621976531) 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 17 ways as a sum of consecutive naturals, for example, 19922646 + ... + 19989623.

It is an arithmetic number, because the mean of its divisors is an integer number (109046973685).

Almost surely, 2^{1336621976541} is an apocalyptic number.

It is an amenable number.

1336621976541 is a deficient number, since it is larger than the sum of its proper divisors (626223549789).

1336621976541 is an equidigital number, since it uses as much as digits as its factorization.

1336621976541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39912397 (or 39912333 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 1336621976541 in words is "one trillion, three hundred thirty-six billion, six hundred twenty-one million, nine hundred seventy-six thousand, five hundred forty-one".