87655223879 has 2 divisors, whose sum is σ = 87655223880. Its totient is φ = 87655223878.

The previous prime is 87655223837. The next prime is 87655223891. The reversal of 87655223879 is 97832255678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87655223879 - 2²⁴ = 87638446663 is a prime.

It is a super-2 number, since 2×87655223879² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87655223809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43827611939 + 43827611940.

It is an arithmetic number, because the mean of its divisors is an integer number (43827611940).

Almost surely, 2^87655223879 is an apocalyptic number.

87655223879 is a deficient number, since it is larger than the sum of its proper divisors (1).

87655223879 is an equidigital number, since it uses as much as digits as its factorization.

87655223879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50803200, while the sum is 62.

The spelling of 87655223879 in words is "eighty-seven billion, six hundred fifty-five million, two hundred twenty-three thousand, eight hundred seventy-nine".