40165213124 has 6 divisors (see below), whose sum is σ = 70289122974. Its totient is φ = 20082606560.

The previous prime is 40165213087. The next prime is 40165213129. The reversal of 40165213124 is 42131256104.

It can be written as a sum of positive squares in only one way, i.e., 22791337024 + 17373876100 = 150968^2 + 131810^2 .

It is a super-2 number, since 2×40165213124² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40165213129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5020651637 + ... + 5020651644.

It is an arithmetic number, because the mean of its divisors is an integer number (11714853829).

Almost surely, 2^40165213124 is an apocalyptic number.

It is an amenable number.

40165213124 is a deficient number, since it is larger than the sum of its proper divisors (30123909850).

40165213124 is a wasteful number, since it uses less digits than its factorization.

40165213124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10041303285 (or 10041303283 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 40165213124 its reverse (42131256104), we get a palindrome (82296469228).

The spelling of 40165213124 in words is "forty billion, one hundred sixty-five million, two hundred thirteen thousand, one hundred twenty-four".