40743444381 has 4 divisors (see below), whose sum is σ = 54324592512. Its totient is φ = 27162296252.

The previous prime is 40743444377. The next prime is 40743444389. The reversal of 40743444381 is 18344434704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40743444381 - 2² = 40743444377 is a prime.

It is a super-2 number, since 2×40743444381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40743444389) 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, 6790574061 + ... + 6790574066.

It is an arithmetic number, because the mean of its divisors is an integer number (13581148128).

Almost surely, 2^40743444381 is an apocalyptic number.

It is an amenable number.

40743444381 is a deficient number, since it is larger than the sum of its proper divisors (13581148131).

40743444381 is a wasteful number, since it uses less digits than its factorization.

40743444381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13581148130.

The product of its (nonzero) digits is 516096, while the sum is 42.

The spelling of 40743444381 in words is "forty billion, seven hundred forty-three million, four hundred forty-four thousand, three hundred eighty-one".