40423223243969 has 2 divisors, whose sum is σ = 40423223243970. Its totient is φ = 40423223243968.

The previous prime is 40423223243903. The next prime is 40423223243981. The reversal of 40423223243969 is 96934232232404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30122095489600 + 10301127754369 = 5488360^2 + 3209537^2 .

It is a cyclic number.

It is not a de Polignac number, because 40423223243969 - 2⁸ = 40423223243713 is a prime.

It is a super-2 number, since 2×40423223243969² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40423223243969.

It is not a weakly prime, because it can be changed into another prime (40423223243989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20211611621984 + 20211611621985.

It is an arithmetic number, because the mean of its divisors is an integer number (20211611621985).

Almost surely, 2^{40423223243969} is an apocalyptic number.

It is an amenable number.

40423223243969 is a deficient number, since it is larger than the sum of its proper divisors (1).

40423223243969 is an equidigital number, since it uses as much as digits as its factorization.

40423223243969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13436928, while the sum is 53.

The spelling of 40423223243969 in words is "forty trillion, four hundred twenty-three billion, two hundred twenty-three million, two hundred forty-three thousand, nine hundred sixty-nine".