86921503847 has 2 divisors, whose sum is σ = 86921503848. Its totient is φ = 86921503846.

The previous prime is 86921503819. The next prime is 86921503859. The reversal of 86921503847 is 74830512968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86921503847 - 2⁶ = 86921503783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86921503447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43460751923 + 43460751924.

It is an arithmetic number, because the mean of its divisors is an integer number (43460751924).

It is a 1-persistent number, because it is pandigital, but 2⋅86921503847 = 173843007694 is not.

Almost surely, 2^86921503847 is an apocalyptic number.

86921503847 is a deficient number, since it is larger than the sum of its proper divisors (1).

86921503847 is an equidigital number, since it uses as much as digits as its factorization.

86921503847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 86921503847 in words is "eighty-six billion, nine hundred twenty-one million, five hundred three thousand, eight hundred forty-seven".