40643065157753 has 2 divisors, whose sum is σ = 40643065157754. Its totient is φ = 40643065157752.

The previous prime is 40643065157689. The next prime is 40643065157771. The reversal of 40643065157753 is 35775156034604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38022121099264 + 2620944058489 = 6166208^2 + 1618933^2 .

It is a cyclic number.

It is not a de Polignac number, because 40643065157753 - 2⁶ = 40643065157689 is a prime.

It is not a weakly prime, because it can be changed into another prime (40643065156753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20321532578876 + 20321532578877.

It is an arithmetic number, because the mean of its divisors is an integer number (20321532578877).

Almost surely, 2^{40643065157753} is an apocalyptic number.

It is an amenable number.

40643065157753 is a deficient number, since it is larger than the sum of its proper divisors (1).

40643065157753 is an equidigital number, since it uses as much as digits as its factorization.

40643065157753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752000, while the sum is 56.

The spelling of 40643065157753 in words is "forty trillion, six hundred forty-three billion, sixty-five million, one hundred fifty-seven thousand, seven hundred fifty-three".