87728070323 has 2 divisors, whose sum is σ = 87728070324. Its totient is φ = 87728070322.

The previous prime is 87728070247. The next prime is 87728070341. The reversal of 87728070323 is 32307082778.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87728070323 - 2¹⁴ = 87728053939 is a prime.

It is not a weakly prime, because it can be changed into another prime (87728000323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43864035161 + 43864035162.

It is an arithmetic number, because the mean of its divisors is an integer number (43864035162).

Almost surely, 2^87728070323 is an apocalyptic number.

87728070323 is a deficient number, since it is larger than the sum of its proper divisors (1).

87728070323 is an equidigital number, since it uses as much as digits as its factorization.

87728070323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 47.

The spelling of 87728070323 in words is "eighty-seven billion, seven hundred twenty-eight million, seventy thousand, three hundred twenty-three".