13220920943 has 8 divisors (see below), whose sum is σ = 13286719488. Its totient is φ = 13155180984.

The previous prime is 13220920931. The next prime is 13220920957. The reversal of 13220920943 is 34902902231.

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 13220920943 - 2¹⁰ = 13220919919 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 (13220920903) 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, 478730 + ... + 505592.

It is an arithmetic number, because the mean of its divisors is an integer number (1660839936).

Almost surely, 2^13220920943 is an apocalyptic number.

13220920943 is a deficient number, since it is larger than the sum of its proper divisors (65798545).

13220920943 is a wasteful number, since it uses less digits than its factorization.

13220920943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29293.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 13220920943 in words is "thirteen billion, two hundred twenty million, nine hundred twenty thousand, nine hundred forty-three".