40733767693 has 2 divisors, whose sum is σ = 40733767694. Its totient is φ = 40733767692.

The previous prime is 40733767681. The next prime is 40733767751. The reversal of 40733767693 is 39676733704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35009029449 + 5724738244 = 187107^2 + 75662^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40733767693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40733767673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20366883846 + 20366883847.

It is an arithmetic number, because the mean of its divisors is an integer number (20366883847).

Almost surely, 2^40733767693 is an apocalyptic number.

It is an amenable number.

40733767693 is a deficient number, since it is larger than the sum of its proper divisors (1).

40733767693 is an equidigital number, since it uses as much as digits as its factorization.

40733767693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12002256, while the sum is 55.

The spelling of 40733767693 in words is "forty billion, seven hundred thirty-three million, seven hundred sixty-seven thousand, six hundred ninety-three".