87720223027 has 2 divisors, whose sum is σ = 87720223028. Its totient is φ = 87720223026.

The previous prime is 87720222971. The next prime is 87720223049. The reversal of 87720223027 is 72032202778.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87720223027 - 2⁷ = 87720222899 is a prime.

It is not a weakly prime, because it can be changed into another prime (87720923027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43860111513 + 43860111514.

It is an arithmetic number, because the mean of its divisors is an integer number (43860111514).

Almost surely, 2^87720223027 is an apocalyptic number.

87720223027 is a deficient number, since it is larger than the sum of its proper divisors (1).

87720223027 is an equidigital number, since it uses as much as digits as its factorization.

87720223027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131712, while the sum is 40.

The spelling of 87720223027 in words is "eighty-seven billion, seven hundred twenty million, two hundred twenty-three thousand, twenty-seven".