87860368447 has 2 divisors, whose sum is σ = 87860368448. Its totient is φ = 87860368446.

The previous prime is 87860368397. The next prime is 87860368457. The reversal of 87860368447 is 74486306878.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87860368447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87860368457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43930184223 + 43930184224.

It is an arithmetic number, because the mean of its divisors is an integer number (43930184224).

Almost surely, 2^87860368447 is an apocalyptic number.

87860368447 is a deficient number, since it is larger than the sum of its proper divisors (1).

87860368447 is an equidigital number, since it uses as much as digits as its factorization.

87860368447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43352064, while the sum is 61.

The spelling of 87860368447 in words is "eighty-seven billion, eight hundred sixty million, three hundred sixty-eight thousand, four hundred forty-seven".