72101348647 has 2 divisors, whose sum is σ = 72101348648. Its totient is φ = 72101348646.

The previous prime is 72101348603. The next prime is 72101348659. The reversal of 72101348647 is 74684310127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72101348647 - 2²⁷ = 71967130919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72101348677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36050674323 + 36050674324.

It is an arithmetic number, because the mean of its divisors is an integer number (36050674324).

Almost surely, 2^72101348647 is an apocalyptic number.

72101348647 is a deficient number, since it is larger than the sum of its proper divisors (1).

72101348647 is an equidigital number, since it uses as much as digits as its factorization.

72101348647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 72101348647 in words is "seventy-two billion, one hundred one million, three hundred forty-eight thousand, six hundred forty-seven".