72805164371 has 2 divisors, whose sum is σ = 72805164372. Its totient is φ = 72805164370.

The previous prime is 72805164349. The next prime is 72805164373. The reversal of 72805164371 is 17346150827.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72805164371 is a prime.

Together with 72805164373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72805164373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36402582185 + 36402582186.

It is an arithmetic number, because the mean of its divisors is an integer number (36402582186).

Almost surely, 2^72805164371 is an apocalyptic number.

72805164371 is a deficient number, since it is larger than the sum of its proper divisors (1).

72805164371 is an equidigital number, since it uses as much as digits as its factorization.

72805164371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 72805164371 in words is "seventy-two billion, eight hundred five million, one hundred sixty-four thousand, three hundred seventy-one".