87128392783 has 2 divisors, whose sum is σ = 87128392784. Its totient is φ = 87128392782.

The previous prime is 87128392781. The next prime is 87128392829. The reversal of 87128392783 is 38729382178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87128392783 - 2¹ = 87128392781 is a prime.

Together with 87128392781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87128392781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43564196391 + 43564196392.

It is an arithmetic number, because the mean of its divisors is an integer number (43564196392).

Almost surely, 2^87128392783 is an apocalyptic number.

87128392783 is a deficient number, since it is larger than the sum of its proper divisors (1).

87128392783 is an equidigital number, since it uses as much as digits as its factorization.

87128392783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 58.

The spelling of 87128392783 in words is "eighty-seven billion, one hundred twenty-eight million, three hundred ninety-two thousand, seven hundred eighty-three".