72369935999 has 4 divisors (see below), whose sum is σ = 72574950336. Its totient is φ = 72164921664.

The previous prime is 72369935951. The next prime is 72369936053. The reversal of 72369935999 is 99953996327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99953996327 = 53 ⋅1885924459.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72369935999 is a prime.

It is a super-2 number, since 2×72369935999² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72369935399) 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, 102506639 + ... + 102507344.

It is an arithmetic number, because the mean of its divisors is an integer number (18143737584).

Almost surely, 2^72369935999 is an apocalyptic number.

72369935999 is a deficient number, since it is larger than the sum of its proper divisors (205014337).

72369935999 is a wasteful number, since it uses less digits than its factorization.

72369935999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205014336.

The product of its digits is 223205220, while the sum is 71.

The spelling of 72369935999 in words is "seventy-two billion, three hundred sixty-nine million, nine hundred thirty-five thousand, nine hundred ninety-nine".