40020400444420 has 48 divisors (see below), whose sum is σ = 92539950648768. Its totient is φ = 14416864722560.

The previous prime is 40020400444417. The next prime is 40020400444463. The reversal of 40020400444420 is 2444400402004.

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, 850027447 + ... + 850074526.

It is an arithmetic number, because the mean of its divisors is an integer number (1927915638516).

Almost surely, 2^{40020400444420} is an apocalyptic number.

It is an amenable number.

40020400444420 is an abundant number, since it is smaller than the sum of its proper divisors (52519550204348).

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

40020400444420 is a wasteful number, since it uses less digits than its factorization.

40020400444420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700102100 (or 1700102098 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 40020400444420 its reverse (2444400402004), we get a palindrome (42464800846424).

The spelling of 40020400444420 in words is "forty trillion, twenty billion, four hundred million, four hundred forty-four thousand, four hundred twenty".