13021620043 has 2 divisors, whose sum is σ = 13021620044. Its totient is φ = 13021620042.

The previous prime is 13021619983. The next prime is 13021620047. The reversal of 13021620043 is 34002612031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13021620043 - 2²¹ = 13019522891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13021619996 and 13021620023.

It is not a weakly prime, because it can be changed into another prime (13021620047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510810021 + 6510810022.

It is an arithmetic number, because the mean of its divisors is an integer number (6510810022).

Almost surely, 2^13021620043 is an apocalyptic number.

13021620043 is a deficient number, since it is larger than the sum of its proper divisors (1).

13021620043 is an equidigital number, since it uses as much as digits as its factorization.

13021620043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The spelling of 13021620043 in words is "thirteen billion, twenty-one million, six hundred twenty thousand, forty-three".