864856254103 has 2 divisors, whose sum is σ = 864856254104. Its totient is φ = 864856254102.

The previous prime is 864856254029. The next prime is 864856254179. The reversal of 864856254103 is 301452658468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864856254103 - 2¹⁷ = 864856123031 is a prime.

It is a super-2 number, since 2×864856254103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864856254193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432428127051 + 432428127052.

It is an arithmetic number, because the mean of its divisors is an integer number (432428127052).

Almost surely, 2^864856254103 is an apocalyptic number.

864856254103 is a deficient number, since it is larger than the sum of its proper divisors (1).

864856254103 is an equidigital number, since it uses as much as digits as its factorization.

864856254103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5529600, while the sum is 52.

The spelling of 864856254103 in words is "eight hundred sixty-four billion, eight hundred fifty-six million, two hundred fifty-four thousand, one hundred three".