87723031915863 has 12 divisors (see below), whose sum is σ = 131404047808488. Its totient is φ = 58482021277080.

The previous prime is 87723031915859. The next prime is 87723031915867. The reversal of 87723031915863 is 36851913032778.

87723031915863 is a `hidden beast` number, since 8 + 7 + 7 + 2 + 30 + 3 + 19 + 1 + 586 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (87723031915859) and next prime (87723031915867).

It is not a de Polignac number, because 87723031915863 - 2² = 87723031915859 is a prime.

It is a super-3 number, since 3×87723031915863³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 87723031915863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87723031915867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180500065428 + ... + 180500065913.

It is an arithmetic number, because the mean of its divisors is an integer number (10950337317374).

Almost surely, 2^{87723031915863} is an apocalyptic number.

87723031915863 is a deficient number, since it is larger than the sum of its proper divisors (43681015892625).

87723031915863 is an equidigital number, since it uses as much as digits as its factorization.

87723031915863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361000131356 (or 361000131344 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

It can be divided in two parts, 87723031915 and 863, that added together give a palindrome (87723032778).

The spelling of 87723031915863 in words is "eighty-seven trillion, seven hundred twenty-three billion, thirty-one million, nine hundred fifteen thousand, eight hundred sixty-three".