40123340155433 has 8 divisors (see below), whose sum is σ = 40394726939400. Its totient is φ = 39851981406720.

The previous prime is 40123340155391. The next prime is 40123340155453. The reversal of 40123340155433 is 33455104332104.

It can be written as a sum of positive squares in 4 ways, for example, as 1143334055824 + 38980006099609 = 1069268^2 + 6243397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40123340155433 - 2²² = 40123335961129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40123340155453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4132808 + ... + 9865433.

It is an arithmetic number, because the mean of its divisors is an integer number (5049340867425).

Almost surely, 2^{40123340155433} is an apocalyptic number.

It is an amenable number.

40123340155433 is a deficient number, since it is larger than the sum of its proper divisors (271386783967).

40123340155433 is a wasteful number, since it uses less digits than its factorization.

40123340155433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14017627.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 40123340155433 its reverse (33455104332104), we get a palindrome (73578444487537).

The spelling of 40123340155433 in words is "forty trillion, one hundred twenty-three billion, three hundred forty million, one hundred fifty-five thousand, four hundred thirty-three".