72685786510811 has 2 divisors, whose sum is σ = 72685786510812. Its totient is φ = 72685786510810.

The previous prime is 72685786510783. The next prime is 72685786510853. The reversal of 72685786510811 is 11801568758627.

It is a weak prime.

It is an emirp because it is prime and its reverse (11801568758627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72685786510811 - 2²² = 72685782316507 is a prime.

It is not a weakly prime, because it can be changed into another prime (72685786510111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36342893255405 + 36342893255406.

It is an arithmetic number, because the mean of its divisors is an integer number (36342893255406).

Almost surely, 2^{72685786510811} is an apocalyptic number.

72685786510811 is a deficient number, since it is larger than the sum of its proper divisors (1).

72685786510811 is an equidigital number, since it uses as much as digits as its factorization.

72685786510811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45158400, while the sum is 65.

The spelling of 72685786510811 in words is "seventy-two trillion, six hundred eighty-five billion, seven hundred eighty-six million, five hundred ten thousand, eight hundred eleven".