13780232841621 has 8 divisors (see below), whose sum is σ = 18420876807840. Its totient is φ = 9163205384912.

The previous prime is 13780232841619. The next prime is 13780232841631. The reversal of 13780232841621 is 12614823208731.

It is a happy number.

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 13780232841621 - 2¹ = 13780232841619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13780232841631) 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, 5904126015 + ... + 5904128348.

It is an arithmetic number, because the mean of its divisors is an integer number (2302609600980).

Almost surely, 2^{13780232841621} is an apocalyptic number.

It is an amenable number.

13780232841621 is a deficient number, since it is larger than the sum of its proper divisors (4640643966219).

13780232841621 is a wasteful number, since it uses less digits than its factorization.

13780232841621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11808254755.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 13780232841621 in words is "thirteen trillion, seven hundred eighty billion, two hundred thirty-two million, eight hundred forty-one thousand, six hundred twenty-one".