72238340387 has 2 divisors, whose sum is σ = 72238340388. Its totient is φ = 72238340386.

The previous prime is 72238340327. The next prime is 72238340401. The reversal of 72238340387 is 78304383227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72238340387 - 2¹⁰ = 72238339363 is a prime.

It is not a weakly prime, because it can be changed into another prime (72238340327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36119170193 + 36119170194.

It is an arithmetic number, because the mean of its divisors is an integer number (36119170194).

Almost surely, 2^72238340387 is an apocalyptic number.

72238340387 is a deficient number, since it is larger than the sum of its proper divisors (1).

72238340387 is an equidigital number, since it uses as much as digits as its factorization.

72238340387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 72238340387 in words is "seventy-two billion, two hundred thirty-eight million, three hundred forty thousand, three hundred eighty-seven".