72440124112331 has 4 divisors (see below), whose sum is σ = 72441957568464. Its totient is φ = 72438290656200.

The previous prime is 72440124112319. The next prime is 72440124112333. The reversal of 72440124112331 is 13321142104427.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72440124112331 is a prime.

It is a super-2 number, since 2×72440124112331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72440124112291 and 72440124112300.

It is not an unprimeable number, because it can be changed into a prime (72440124112333) 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, 916668800 + ... + 916747821.

It is an arithmetic number, because the mean of its divisors is an integer number (18110489392116).

Almost surely, 2^{72440124112331} is an apocalyptic number.

72440124112331 is a deficient number, since it is larger than the sum of its proper divisors (1833456133).

72440124112331 is a wasteful number, since it uses less digits than its factorization.

72440124112331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833456132.

The product of its (nonzero) digits is 32256, while the sum is 35.

Adding to 72440124112331 its reverse (13321142104427), we get a palindrome (85761266216758).

The spelling of 72440124112331 in words is "seventy-two trillion, four hundred forty billion, one hundred twenty-four million, one hundred twelve thousand, three hundred thirty-one".