40743157517 has 2 divisors, whose sum is σ = 40743157518. Its totient is φ = 40743157516.

The previous prime is 40743157453. The next prime is 40743157523. The reversal of 40743157517 is 71575134704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20730528361 + 20012629156 = 143981^2 + 141466^2 .

It is a cyclic number.

It is not a de Polignac number, because 40743157517 - 2⁶ = 40743157453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40743057517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20371578758 + 20371578759.

It is an arithmetic number, because the mean of its divisors is an integer number (20371578759).

Almost surely, 2^40743157517 is an apocalyptic number.

It is an amenable number.

40743157517 is a deficient number, since it is larger than the sum of its proper divisors (1).

40743157517 is an equidigital number, since it uses as much as digits as its factorization.

40743157517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 40743157517 in words is "forty billion, seven hundred forty-three million, one hundred fifty-seven thousand, five hundred seventeen".