40121959376833 has 4 divisors (see below), whose sum is σ = 40136345166420. Its totient is φ = 40107573587248.

The previous prime is 40121959376801. The next prime is 40121959376857. The reversal of 40121959376833 is 33867395912104.

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 16846033689664 + 23275925687169 = 4104392^2 + 4824513^2 .

It is a cyclic number.

It is not a de Polignac number, because 40121959376833 - 2⁵ = 40121959376801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40121959356833) 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, 7192890610 + ... + 7192896187.

It is an arithmetic number, because the mean of its divisors is an integer number (10034086291605).

It is a 3-persistent number, because k⋅40121959376833 is pandigital for 1 ≤ k ≤ 3, but not for k = 4.

Almost surely, 2^{40121959376833} is an apocalyptic number.

It is an amenable number.

40121959376833 is a deficient number, since it is larger than the sum of its proper divisors (14385789587).

40121959376833 is a wasteful number, since it uses less digits than its factorization.

40121959376833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14385789586.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 40121959376833 in words is "forty trillion, one hundred twenty-one billion, nine hundred fifty-nine million, three hundred seventy-six thousand, eight hundred thirty-three".