40145346574447 has 2 divisors, whose sum is σ = 40145346574448. Its totient is φ = 40145346574446.

The previous prime is 40145346574441. The next prime is 40145346574483. The reversal of 40145346574447 is 74447564354104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40145346574447 is a prime.

It is a super-2 number, since 2×40145346574447² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40145346574391 and 40145346574400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40145346574441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20072673287223 + 20072673287224.

It is an arithmetic number, because the mean of its divisors is an integer number (20072673287224).

Almost surely, 2^{40145346574447} is an apocalyptic number.

40145346574447 is a deficient number, since it is larger than the sum of its proper divisors (1).

40145346574447 is an equidigital number, since it uses as much as digits as its factorization.

40145346574447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90316800, while the sum is 58.

The spelling of 40145346574447 in words is "forty trillion, one hundred forty-five billion, three hundred forty-six million, five hundred seventy-four thousand, four hundred forty-seven".