40344446251 has 8 divisors (see below), whose sum is σ = 41122039824. Its totient is φ = 39567459360.

The previous prime is 40344446249. The next prime is 40344446269. The reversal of 40344446251 is 15264444304.

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

It is a cyclic number.

It is not a de Polignac number, because 40344446251 - 2¹ = 40344446249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40344446251.

It is not an unprimeable number, because it can be changed into a prime (40344446851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16236 + ... + 284521.

It is an arithmetic number, because the mean of its divisors is an integer number (5140254978).

Almost surely, 2^40344446251 is an apocalyptic number.

40344446251 is a deficient number, since it is larger than the sum of its proper divisors (777593573).

40344446251 is a wasteful number, since it uses less digits than its factorization.

40344446251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303341.

The product of its (nonzero) digits is 184320, while the sum is 37.

The spelling of 40344446251 in words is "forty billion, three hundred forty-four million, four hundred forty-six thousand, two hundred fifty-one".