40023121444 has 24 divisors (see below), whose sum is σ = 76269110400. Its totient is φ = 18304584480.

The previous prime is 40023121433. The next prime is 40023121459. The reversal of 40023121444 is 44412132004.

It is a super-3 number, since 3×40023121444³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9077452 + ... + 9081859.

It is an arithmetic number, because the mean of its divisors is an integer number (3177879600).

Almost surely, 2^40023121444 is an apocalyptic number.

It is an amenable number.

40023121444 is a deficient number, since it is larger than the sum of its proper divisors (36245988956).

40023121444 is a wasteful number, since it uses less digits than its factorization.

40023121444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18159363 (or 18159361 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 40023121444 its reverse (44412132004), we get a palindrome (84435253448).

The spelling of 40023121444 in words is "forty billion, twenty-three million, one hundred twenty-one thousand, four hundred forty-four".