72667211623 has 2 divisors, whose sum is σ = 72667211624. Its totient is φ = 72667211622.

The previous prime is 72667211587. The next prime is 72667211647. The reversal of 72667211623 is 32611276627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72667211623 - 2²⁵ = 72633657191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72667211623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72667211423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36333605811 + 36333605812.

It is an arithmetic number, because the mean of its divisors is an integer number (36333605812).

Almost surely, 2^72667211623 is an apocalyptic number.

72667211623 is a deficient number, since it is larger than the sum of its proper divisors (1).

72667211623 is an equidigital number, since it uses as much as digits as its factorization.

72667211623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 43.

The spelling of 72667211623 in words is "seventy-two billion, six hundred sixty-seven million, two hundred eleven thousand, six hundred twenty-three".