72161406311 has 2 divisors, whose sum is σ = 72161406312. Its totient is φ = 72161406310.

The previous prime is 72161406293. The next prime is 72161406347. The reversal of 72161406311 is 11360416127.

It is a weak prime.

It is an emirp because it is prime and its reverse (11360416127) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72161406311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72161406371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36080703155 + 36080703156.

It is an arithmetic number, because the mean of its divisors is an integer number (36080703156).

Almost surely, 2^72161406311 is an apocalyptic number.

72161406311 is a deficient number, since it is larger than the sum of its proper divisors (1).

72161406311 is an equidigital number, since it uses as much as digits as its factorization.

72161406311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 72161406311 in words is "seventy-two billion, one hundred sixty-one million, four hundred six thousand, three hundred eleven".