40405340004 has 12 divisors (see below), whose sum is σ = 94279126704. Its totient is φ = 13468446664.

The previous prime is 40405339991. The next prime is 40405340021. The reversal of 40405340004 is 40004350404.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-4 number, since 4×40405340004⁴ (a number of 44 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683555822 + ... + 1683555845.

It is an arithmetic number, because the mean of its divisors is an integer number (7856593892).

Almost surely, 2^40405340004 is an apocalyptic number.

It is an amenable number.

40405340004 is an abundant number, since it is smaller than the sum of its proper divisors (53873786700).

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

40405340004 is a wasteful number, since it uses less digits than its factorization.

40405340004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367111674 (or 3367111672 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

Adding to 40405340004 its reverse (40004350404), we get a palindrome (80409690408).

The spelling of 40405340004 in words is "forty billion, four hundred five million, three hundred forty thousand, four".