863772215063 has 2 divisors, whose sum is σ = 863772215064. Its totient is φ = 863772215062.

The previous prime is 863772215029. The next prime is 863772215107. The reversal of 863772215063 is 360512277368.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 863772215063 - 2⁸ = 863772214807 is a prime.

It is a super-3 number, since 3×863772215063³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863772415063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431886107531 + 431886107532.

It is an arithmetic number, because the mean of its divisors is an integer number (431886107532).

Almost surely, 2^863772215063 is an apocalyptic number.

863772215063 is a deficient number, since it is larger than the sum of its proper divisors (1).

863772215063 is an equidigital number, since it uses as much as digits as its factorization.

863772215063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 863772215063 in words is "eight hundred sixty-three billion, seven hundred seventy-two million, two hundred fifteen thousand, sixty-three".