43754643731 has 2 divisors, whose sum is σ = 43754643732. Its totient is φ = 43754643730.

The previous prime is 43754643727. The next prime is 43754643733. The reversal of 43754643731 is 13734645734.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43754643731 - 2² = 43754643727 is a prime.

It is a super-2 number, since 2×43754643731² (a number of 22 digits) contains 22 as substring.

Together with 43754643733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43754643733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21877321865 + 21877321866.

It is an arithmetic number, because the mean of its divisors is an integer number (21877321866).

Almost surely, 2^43754643731 is an apocalyptic number.

43754643731 is a deficient number, since it is larger than the sum of its proper divisors (1).

43754643731 is an equidigital number, since it uses as much as digits as its factorization.

43754643731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 47.

The spelling of 43754643731 in words is "forty-three billion, seven hundred fifty-four million, six hundred forty-three thousand, seven hundred thirty-one".