72138274127 has 8 divisors (see below), whose sum is σ = 72212621040. Its totient is φ = 72063968320.

The previous prime is 72138274099. The next prime is 72138274133. The reversal of 72138274127 is 72147283127.

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 72138274127 - 2⁶ = 72138274063 is a prime.

It is a super-2 number, since 2×72138274127² (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 (72138274177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4430333 + ... + 4446585.

It is an arithmetic number, because the mean of its divisors is an integer number (9026577630).

Almost surely, 2^72138274127 is an apocalyptic number.

72138274127 is a deficient number, since it is larger than the sum of its proper divisors (74346913).

72138274127 is a wasteful number, since it uses less digits than its factorization.

72138274127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20553.

The product of its digits is 263424, while the sum is 44.

The spelling of 72138274127 in words is "seventy-two billion, one hundred thirty-eight million, two hundred seventy-four thousand, one hundred twenty-seven".