43953684481 has 6 divisors (see below), whose sum is σ = 51129796290. Its totient is φ = 37674586656.

The previous prime is 43953684461. The next prime is 43953684517. The reversal of 43953684481 is 18448635934.

It can be written as a sum of positive squares in only one way, i.e., 41038656400 + 2915028081 = 202580^2 + 53991^2 .

It is not a de Polignac number, because 43953684481 - 2²⁵ = 43920130049 is a prime.

It is a super-2 number, since 2×43953684481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43953684421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 448506936 + ... + 448507033.

It is an arithmetic number, because the mean of its divisors is an integer number (8521632715).

It is a Proth number, since it is equal to 83835 ⋅ 2¹⁹ + 1 and 83835 < 2¹⁹.

Almost surely, 2^43953684481 is an apocalyptic number.

It is an amenable number.

43953684481 is a deficient number, since it is larger than the sum of its proper divisors (7176111809).

43953684481 is an equidigital number, since it uses as much as digits as its factorization.

43953684481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897013983 (or 897013976 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 55.

The spelling of 43953684481 in words is "forty-three billion, nine hundred fifty-three million, six hundred eighty-four thousand, four hundred eighty-one".