40851034705447 has 2 divisors, whose sum is σ = 40851034705448. Its totient is φ = 40851034705446.

The previous prime is 40851034705433. The next prime is 40851034705471. The reversal of 40851034705447 is 74450743015804.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40851034705447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40851034705394 and 40851034705403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40851034702447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20425517352723 + 20425517352724.

It is an arithmetic number, because the mean of its divisors is an integer number (20425517352724).

Almost surely, 2^{40851034705447} is an apocalyptic number.

40851034705447 is a deficient number, since it is larger than the sum of its proper divisors (1).

40851034705447 is an equidigital number, since it uses as much as digits as its factorization.

40851034705447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7526400, while the sum is 52.

The spelling of 40851034705447 in words is "forty trillion, eight hundred fifty-one billion, thirty-four million, seven hundred five thousand, four hundred forty-seven".