43722118623481 has 4 divisors (see below), whose sum is σ = 46294007954292. Its totient is φ = 41150229292672.

The previous prime is 43722118623479. The next prime is 43722118623503. The reversal of 43722118623481 is 18432681122734.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21198703682025 + 22523414941456 = 4604205^2 + 4745884^2 .

It is a cyclic number.

It is not a de Polignac number, because 43722118623481 - 2¹ = 43722118623479 is a prime.

It is a super-2 number, since 2×43722118623481² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43722118623401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1285944665380 + ... + 1285944665413.

It is an arithmetic number, because the mean of its divisors is an integer number (11573501988573).

Almost surely, 2^{43722118623481} is an apocalyptic number.

It is an amenable number.

43722118623481 is a deficient number, since it is larger than the sum of its proper divisors (2571889330811).

43722118623481 is a wasteful number, since it uses less digits than its factorization.

43722118623481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571889330810.

The product of its digits is 3096576, while the sum is 52.

The spelling of 43722118623481 in words is "forty-three trillion, seven hundred twenty-two billion, one hundred eighteen million, six hundred twenty-three thousand, four hundred eighty-one".