40511765537443 has 2 divisors, whose sum is σ = 40511765537444. Its totient is φ = 40511765537442.

The previous prime is 40511765537417. The next prime is 40511765537491. The reversal of 40511765537443 is 34473556711504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40511765537443 - 2²⁵ = 40511731983011 is a prime.

It is not a weakly prime, because it can be changed into another prime (40511765531443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20255882768721 + 20255882768722.

It is an arithmetic number, because the mean of its divisors is an integer number (20255882768722).

Almost surely, 2^{40511765537443} is an apocalyptic number.

40511765537443 is a deficient number, since it is larger than the sum of its proper divisors (1).

40511765537443 is an equidigital number, since it uses as much as digits as its factorization.

40511765537443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168000, while the sum is 55.

The spelling of 40511765537443 in words is "forty trillion, five hundred eleven billion, seven hundred sixty-five million, five hundred thirty-seven thousand, four hundred forty-three".