40220063969 has 2 divisors, whose sum is σ = 40220063970. Its totient is φ = 40220063968.

The previous prime is 40220063963. The next prime is 40220064019. The reversal of 40220063969 is 96936002204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34071622225 + 6148441744 = 184585^2 + 78412^2 .

It is a cyclic number.

It is not a de Polignac number, because 40220063969 - 2¹⁶ = 40219998433 is a prime.

It is a super-2 number, since 2×40220063969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40220063963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110031984 + 20110031985.

It is an arithmetic number, because the mean of its divisors is an integer number (20110031985).

Almost surely, 2^40220063969 is an apocalyptic number.

It is an amenable number.

40220063969 is a deficient number, since it is larger than the sum of its proper divisors (1).

40220063969 is an equidigital number, since it uses as much as digits as its factorization.

40220063969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 40220063969 in words is "forty billion, two hundred twenty million, sixty-three thousand, nine hundred sixty-nine".