40448788784405 has 8 divisors (see below), whose sum is σ = 49334260419384. Its totient is φ = 31828555108800.

The previous prime is 40448788784377. The next prime is 40448788784441. The reversal of 40448788784405 is 50448788784404.

It can be written as a sum of positive squares in 4 ways, for example, as 216167343844 + 40232621440561 = 464938^2 + 6342919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40448788784405 - 2²⁶ = 40448721675541 is a prime.

It is a super-2 number, since 2×40448788784405² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 66309489506 + ... + 66309490115.

It is an arithmetic number, because the mean of its divisors is an integer number (6166782552423).

Almost surely, 2^{40448788784405} is an apocalyptic number.

It is an amenable number.

40448788784405 is a deficient number, since it is larger than the sum of its proper divisors (8885471634979).

40448788784405 is a wasteful number, since it uses less digits than its factorization.

40448788784405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132618979687.

The product of its (nonzero) digits is 1027604480, while the sum is 71.

Subtracting 40448788784405 from its reverse (50448788784404), we obtain a palindrome (9999999999999).

The spelling of 40448788784405 in words is "forty trillion, four hundred forty-eight billion, seven hundred eighty-eight million, seven hundred eighty-four thousand, four hundred five".