40344123215 has 16 divisors (see below), whose sum is σ = 52870557600. Its totient is φ = 29309829120.

The previous prime is 40344123173. The next prime is 40344123221. The reversal of 40344123215 is 51232144304.

It is a de Polignac number, because none of the positive numbers 2^k-40344123215 is a prime.

It is a super-3 number, since 3×40344123215³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339890 + ... + 442959.

It is an arithmetic number, because the mean of its divisors is an integer number (3304409850).

Almost surely, 2^40344123215 is an apocalyptic number.

40344123215 is a deficient number, since it is larger than the sum of its proper divisors (12526434385).

40344123215 is a wasteful number, since it uses less digits than its factorization.

40344123215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783802.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 40344123215 its reverse (51232144304), we get a palindrome (91576267519).

The spelling of 40344123215 in words is "forty billion, three hundred forty-four million, one hundred twenty-three thousand, two hundred fifteen".