13421545073 has 2 divisors, whose sum is σ = 13421545074. Its totient is φ = 13421545072.

The previous prime is 13421545003. The next prime is 13421545079. The reversal of 13421545073 is 37054512431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10689078544 + 2732466529 = 103388^2 + 52273^2 .

It is a cyclic number.

It is not a de Polignac number, because 13421545073 - 2¹⁴ = 13421528689 is a prime.

It is not a weakly prime, because it can be changed into another prime (13421545079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6710772536 + 6710772537.

It is an arithmetic number, because the mean of its divisors is an integer number (6710772537).

Almost surely, 2^13421545073 is an apocalyptic number.

It is an amenable number.

13421545073 is a deficient number, since it is larger than the sum of its proper divisors (1).

13421545073 is an equidigital number, since it uses as much as digits as its factorization.

13421545073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 13421545073 in words is "thirteen billion, four hundred twenty-one million, five hundred forty-five thousand, seventy-three".