40851214847969 has 2 divisors, whose sum is σ = 40851214847970. Its totient is φ = 40851214847968.

The previous prime is 40851214847939. The next prime is 40851214848053. The reversal of 40851214847969 is 96974841215804.

40851214847969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31747646595025 + 9103568252944 = 5634505^2 + 3017212^2 .

It is a cyclic number.

It is not a de Polignac number, because 40851214847969 - 2⁸ = 40851214847713 is a prime.

It is a super-2 number, since 2×40851214847969² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40851214847899 and 40851214847908.

It is not a weakly prime, because it can be changed into another prime (40851214847909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20425607423984 + 20425607423985.

It is an arithmetic number, because the mean of its divisors is an integer number (20425607423985).

Almost surely, 2^{40851214847969} is an apocalyptic number.

It is an amenable number.

40851214847969 is a deficient number, since it is larger than the sum of its proper divisors (1).

40851214847969 is an equidigital number, since it uses as much as digits as its factorization.

40851214847969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139345920, while the sum is 68.

The spelling of 40851214847969 in words is "forty trillion, eight hundred fifty-one billion, two hundred fourteen million, eight hundred forty-seven thousand, nine hundred sixty-nine".