40023121445 has 64 divisors (see below), whose sum is σ = 52599490560. Its totient is φ = 29150668800.

The previous prime is 40023121433. The next prime is 40023121459. The reversal of 40023121445 is 54412132004.

It is not a de Polignac number, because 40023121445 - 2⁶ = 40023121381 is a prime.

It is a super-3 number, since 3×40023121445³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 70339121 + ... + 70339689.

It is an arithmetic number, because the mean of its divisors is an integer number (821867040).

Almost surely, 2^40023121445 is an apocalyptic number.

It is an amenable number.

40023121445 is a deficient number, since it is larger than the sum of its proper divisors (12576369115).

40023121445 is a wasteful number, since it uses less digits than its factorization.

40023121445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 40023121445 its reverse (54412132004), we get a palindrome (94435253449).

The spelling of 40023121445 in words is "forty billion, twenty-three million, one hundred twenty-one thousand, four hundred forty-five".