87728070247 has 2 divisors, whose sum is σ = 87728070248. Its totient is φ = 87728070246.

The previous prime is 87728070239. The next prime is 87728070323. The reversal of 87728070247 is 74207082778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87728070247 - 2³ = 87728070239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87728070194 and 87728070203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87728070347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43864035123 + 43864035124.

It is an arithmetic number, because the mean of its divisors is an integer number (43864035124).

Almost surely, 2^87728070247 is an apocalyptic number.

87728070247 is a deficient number, since it is larger than the sum of its proper divisors (1).

87728070247 is an equidigital number, since it uses as much as digits as its factorization.

87728070247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2458624, while the sum is 52.

The spelling of 87728070247 in words is "eighty-seven billion, seven hundred twenty-eight million, seventy thousand, two hundred forty-seven".