87655223878 has 16 divisors (see below), whose sum is σ = 133345484064. Its totient is φ = 43206829120.

The previous prime is 87655223837. The next prime is 87655223879. The reversal of 87655223878 is 87832255678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87655223879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3209376 + ... + 3236572.

It is an arithmetic number, because the mean of its divisors is an integer number (8334092754).

Almost surely, 2^87655223878 is an apocalyptic number.

87655223878 is a deficient number, since it is larger than the sum of its proper divisors (45690260186).

87655223878 is a wasteful number, since it uses less digits than its factorization.

87655223878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49967.

The product of its digits is 45158400, while the sum is 61.

The spelling of 87655223878 in words is "eighty-seven billion, six hundred fifty-five million, two hundred twenty-three thousand, eight hundred seventy-eight".