40208349806 has 16 divisors (see below), whose sum is σ = 63821219328. Its totient is φ = 18959232600.

The previous prime is 40208349793. The next prime is 40208349817. The reversal of 40208349806 is 60894380204.

It is a super-2 number, since 2×40208349806² (a number of 22 digits) contains 22 as substring.

It is a Curzon 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, 6152330 + ... + 6158861.

It is an arithmetic number, because the mean of its divisors is an integer number (3988826208).

Almost surely, 2^40208349806 is an apocalyptic number.

40208349806 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40208349806 is a deficient number, since it is larger than the sum of its proper divisors (23612869522).

40208349806 is a wasteful number, since it uses less digits than its factorization.

40208349806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12311287.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 40208349806 in words is "forty billion, two hundred eight million, three hundred forty-nine thousand, eight hundred six".