88620863861 has 2 divisors, whose sum is σ = 88620863862. Its totient is φ = 88620863860.

The previous prime is 88620863831. The next prime is 88620863869. The reversal of 88620863861 is 16836802688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54730263025 + 33890600836 = 233945^2 + 184094^2 .

It is a cyclic number.

It is not a de Polignac number, because 88620863861 - 2¹⁴ = 88620847477 is a prime.

It is a super-2 number, since 2×88620863861² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 88620863797 and 88620863806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88620863869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44310431930 + 44310431931.

It is an arithmetic number, because the mean of its divisors is an integer number (44310431931).

Almost surely, 2^88620863861 is an apocalyptic number.

It is an amenable number.

88620863861 is a deficient number, since it is larger than the sum of its proper divisors (1).

88620863861 is an equidigital number, since it uses as much as digits as its factorization.

88620863861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5308416, while the sum is 56.

The spelling of 88620863861 in words is "eighty-eight billion, six hundred twenty million, eight hundred sixty-three thousand, eight hundred sixty-one".