40073373397 has 2 divisors, whose sum is σ = 40073373398. Its totient is φ = 40073373396.

The previous prime is 40073373293. The next prime is 40073373443. The reversal of 40073373397 is 79337337004.

It is a happy number.

40073373397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (40073373443) can be obtained adding 40073373397 to its sum of digits (46).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20449286001 + 19624087396 = 143001^2 + 140086^2 .

It is a cyclic number.

It is not a de Polignac number, because 40073373397 - 2²³ = 40064984789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40073373497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20036686698 + 20036686699.

It is an arithmetic number, because the mean of its divisors is an integer number (20036686699).

Almost surely, 2^40073373397 is an apocalyptic number.

It is an amenable number.

40073373397 is a deficient number, since it is larger than the sum of its proper divisors (1).

40073373397 is an equidigital number, since it uses as much as digits as its factorization.

40073373397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000188, while the sum is 46.

The spelling of 40073373397 in words is "forty billion, seventy-three million, three hundred seventy-three thousand, three hundred ninety-seven".