87867178556 has 24 divisors (see below), whose sum is σ = 158031169296. Its totient is φ = 42722398080.

The previous prime is 87867178547. The next prime is 87867178559. The reversal of 87867178556 is 65587176878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87867178559) 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, 822251 + ... + 922946.

It is an arithmetic number, because the mean of its divisors is an integer number (6584632054).

Almost surely, 2^87867178556 is an apocalyptic number.

It is an amenable number.

87867178556 is a deficient number, since it is larger than the sum of its proper divisors (70163990740).

87867178556 is a wasteful number, since it uses less digits than its factorization.

87867178556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745549 (or 1745547 counting only the distinct ones).

The product of its digits is 158054400, while the sum is 68.

The spelling of 87867178556 in words is "eighty-seven billion, eight hundred sixty-seven million, one hundred seventy-eight thousand, five hundred fifty-six".