43420255050961 has 2 divisors, whose sum is σ = 43420255050962. Its totient is φ = 43420255050960.

The previous prime is 43420255050947. The next prime is 43420255051021. The reversal of 43420255050961 is 16905055202434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43209009102736 + 211245948225 = 6573356^2 + 459615^2 .

It is a cyclic number.

It is not a de Polignac number, because 43420255050961 - 2²⁷ = 43420120833233 is a prime.

It is not a weakly prime, because it can be changed into another prime (43420255050061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21710127525480 + 21710127525481.

It is an arithmetic number, because the mean of its divisors is an integer number (21710127525481).

Almost surely, 2^{43420255050961} is an apocalyptic number.

It is an amenable number.

43420255050961 is a deficient number, since it is larger than the sum of its proper divisors (1).

43420255050961 is an equidigital number, since it uses as much as digits as its factorization.

43420255050961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 43420255050961 in words is "forty-three trillion, four hundred twenty billion, two hundred fifty-five million, fifty thousand, nine hundred sixty-one".