40143668407457 has 2 divisors, whose sum is σ = 40143668407458. Its totient is φ = 40143668407456.

The previous prime is 40143668407421. The next prime is 40143668407487. The reversal of 40143668407457 is 75470486634104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38925108522001 + 1218559885456 = 6238999^2 + 1103884^2 .

It is a cyclic number.

It is not a de Polignac number, because 40143668407457 - 2⁸ = 40143668407201 is a prime.

It is a super-3 number, since 3×40143668407457³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 40143668407396 and 40143668407405.

It is not a weakly prime, because it can be changed into another prime (40143668407487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20071834203728 + 20071834203729.

It is an arithmetic number, because the mean of its divisors is an integer number (20071834203729).

Almost surely, 2^{40143668407457} is an apocalyptic number.

It is an amenable number.

40143668407457 is a deficient number, since it is larger than the sum of its proper divisors (1).

40143668407457 is an equidigital number, since it uses as much as digits as its factorization.

40143668407457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54190080, while the sum is 59.

The spelling of 40143668407457 in words is "forty trillion, one hundred forty-three billion, six hundred sixty-eight million, four hundred seven thousand, four hundred fifty-seven".