72423071439 has 16 divisors (see below), whose sum is σ = 104237107200. Its totient is φ = 44590315616.

The previous prime is 72423071429. The next prime is 72423071443. The reversal of 72423071439 is 93417032427.

It is a cyclic number.

It is not a de Polignac number, because 72423071439 - 2⁴ = 72423071423 is a prime.

It is a super-3 number, since 3×72423071439³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72423071439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72423071429) 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 15 ways as a sum of consecutive naturals, for example, 18094719 + ... + 18098720.

It is an arithmetic number, because the mean of its divisors is an integer number (6514819200).

Almost surely, 2^72423071439 is an apocalyptic number.

72423071439 is a deficient number, since it is larger than the sum of its proper divisors (31814035761).

72423071439 is a wasteful number, since it uses less digits than its factorization.

72423071439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36193494.

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 72423071439 in words is "seventy-two billion, four hundred twenty-three million, seventy-one thousand, four hundred thirty-nine".