43465063921 has 2 divisors, whose sum is σ = 43465063922. Its totient is φ = 43465063920.

The previous prime is 43465063913. The next prime is 43465063949. The reversal of 43465063921 is 12936056434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33611722225 + 9853341696 = 183335^2 + 99264^2 .

It is a cyclic number.

It is not a de Polignac number, because 43465063921 - 2³ = 43465063913 is a prime.

It is a super-3 number, since 3×43465063921³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (43465063981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21732531960 + 21732531961.

It is an arithmetic number, because the mean of its divisors is an integer number (21732531961).

Almost surely, 2^43465063921 is an apocalyptic number.

It is an amenable number.

43465063921 is a deficient number, since it is larger than the sum of its proper divisors (1).

43465063921 is an equidigital number, since it uses as much as digits as its factorization.

43465063921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 43465063921 in words is "forty-three billion, four hundred sixty-five million, sixty-three thousand, nine hundred twenty-one".