40693228836493 has 2 divisors, whose sum is σ = 40693228836494. Its totient is φ = 40693228836492.

The previous prime is 40693228836479. The next prime is 40693228836499. The reversal of 40693228836493 is 39463882239604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26262324603684 + 14430904232809 = 5124678^2 + 3798803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40693228836493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40693228836499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20346614418246 + 20346614418247.

It is an arithmetic number, because the mean of its divisors is an integer number (20346614418247).

Almost surely, 2^{40693228836493} is an apocalyptic number.

It is an amenable number.

40693228836493 is a deficient number, since it is larger than the sum of its proper divisors (1).

40693228836493 is an equidigital number, since it uses as much as digits as its factorization.

40693228836493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322486272, while the sum is 67.

The spelling of 40693228836493 in words is "forty trillion, six hundred ninety-three billion, two hundred twenty-eight million, eight hundred thirty-six thousand, four hundred ninety-three".