40023764405 has 4 divisors (see below), whose sum is σ = 48028517292. Its totient is φ = 32019011520.

The previous prime is 40023764401. The next prime is 40023764413. The reversal of 40023764405 is 50446732004.

40023764405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11839398481 + 28184365924 = 108809^2 + 167882^2 .

It is not a de Polignac number, because 40023764405 - 2² = 40023764401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40023764401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4002376436 + ... + 4002376445.

It is an arithmetic number, because the mean of its divisors is an integer number (12007129323).

Almost surely, 2^40023764405 is an apocalyptic number.

It is an amenable number.

40023764405 is a deficient number, since it is larger than the sum of its proper divisors (8004752887).

40023764405 is an equidigital number, since it uses as much as digits as its factorization.

40023764405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8004752886.

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 40023764405 in words is "forty billion, twenty-three million, seven hundred sixty-four thousand, four hundred five".