40134323440020 has 48 divisors (see below), whose sum is σ = 113049016472448. Its totient is φ = 10638399504000.

The previous prime is 40134323439961. The next prime is 40134323440031. The reversal of 40134323440020 is 2004432343104.

It is a happy number.

It is a super-2 number, since 2×40134323440020² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 40134323440020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2002700731 + ... + 2002720770.

It is an arithmetic number, because the mean of its divisors is an integer number (2355187843176).

Almost surely, 2^{40134323440020} is an apocalyptic number.

It is an amenable number.

40134323440020 is an abundant number, since it is smaller than the sum of its proper divisors (72914693032428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40134323440020 is a wasteful number, since it uses less digits than its factorization.

40134323440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005421680 (or 4005421678 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 40134323440020 its reverse (2004432343104), we get a palindrome (42138755783124).

The spelling of 40134323440020 in words is "forty trillion, one hundred thirty-four billion, three hundred twenty-three million, four hundred forty thousand, twenty".