13621621141 has 4 divisors (see below), whose sum is σ = 13938403072. Its totient is φ = 13304839212.

The previous prime is 13621621121. The next prime is 13621621159. The reversal of 13621621141 is 14112612631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13621621141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621621121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158390901 + ... + 158390986.

It is an arithmetic number, because the mean of its divisors is an integer number (3484600768).

Almost surely, 2^13621621141 is an apocalyptic number.

It is an amenable number.

13621621141 is a deficient number, since it is larger than the sum of its proper divisors (316781931).

13621621141 is an equidigital number, since it uses as much as digits as its factorization.

13621621141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316781930.

The product of its digits is 1728, while the sum is 28.

The spelling of 13621621141 in words is "thirteen billion, six hundred twenty-one million, six hundred twenty-one thousand, one hundred forty-one".