43100421386873 has 2 divisors, whose sum is σ = 43100421386874. Its totient is φ = 43100421386872.

The previous prime is 43100421386833. The next prime is 43100421386879. The reversal of 43100421386873 is 37868312400134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42641004480064 + 459416906809 = 6530008^2 + 677803^2 .

It is a cyclic number.

It is not a de Polignac number, because 43100421386873 - 2⁶ = 43100421386809 is a prime.

It is not a weakly prime, because it can be changed into another prime (43100421386879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21550210693436 + 21550210693437.

It is an arithmetic number, because the mean of its divisors is an integer number (21550210693437).

Almost surely, 2^{43100421386873} is an apocalyptic number.

It is an amenable number.

43100421386873 is a deficient number, since it is larger than the sum of its proper divisors (1).

43100421386873 is an equidigital number, since it uses as much as digits as its factorization.

43100421386873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 43100421386873 in words is "forty-three trillion, one hundred billion, four hundred twenty-one million, three hundred eighty-six thousand, eight hundred seventy-three".