40005673420 has 96 divisors (see below), whose sum is σ = 88086398400. Its totient is φ = 15242572800.

The previous prime is 40005673417. The next prime is 40005673439. The reversal of 40005673420 is 2437650004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13750926 + ... + 13753834.

It is an arithmetic number, because the mean of its divisors is an integer number (917566650).

Almost surely, 2^40005673420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40005673420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44043199200).

40005673420 is an abundant number, since it is smaller than the sum of its proper divisors (48080724980).

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

40005673420 is a wasteful number, since it uses less digits than its factorization.

40005673420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259 (or 3257 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The spelling of 40005673420 in words is "forty billion, five million, six hundred seventy-three thousand, four hundred twenty".