72275671667 has 2 divisors, whose sum is σ = 72275671668. Its totient is φ = 72275671666.

The previous prime is 72275671613. The next prime is 72275671687. The reversal of 72275671667 is 76617657227.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72275671667 - 2⁶ = 72275671603 is a prime.

It is not a weakly prime, because it can be changed into another prime (72275671607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36137835833 + 36137835834.

It is an arithmetic number, because the mean of its divisors is an integer number (36137835834).

Almost surely, 2^72275671667 is an apocalyptic number.

72275671667 is a deficient number, since it is larger than the sum of its proper divisors (1).

72275671667 is an equidigital number, since it uses as much as digits as its factorization.

72275671667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10372320, while the sum is 56.

The spelling of 72275671667 in words is "seventy-two billion, two hundred seventy-five million, six hundred seventy-one thousand, six hundred sixty-seven".