40234220164 has 6 divisors (see below), whose sum is σ = 70409885294. Its totient is φ = 20117110080.

The previous prime is 40234220153. The next prime is 40234220167. The reversal of 40234220164 is 46102243204.

It can be written as a sum of positive squares in only one way, i.e., 27636402564 + 12597817600 = 166242^2 + 112240^2 .

It is not an unprimeable number, because it can be changed into a prime (40234220167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5029277517 + ... + 5029277524.

Almost surely, 2^40234220164 is an apocalyptic number.

It is an amenable number.

40234220164 is a deficient number, since it is larger than the sum of its proper divisors (30175665130).

40234220164 is a wasteful number, since it uses less digits than its factorization.

40234220164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10058555045 (or 10058555043 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 40234220164 its reverse (46102243204), we get a palindrome (86336463368).

The spelling of 40234220164 in words is "forty billion, two hundred thirty-four million, two hundred twenty thousand, one hundred sixty-four".