87218076356 has 6 divisors (see below), whose sum is σ = 152631633630. Its totient is φ = 43609038176.

The previous prime is 87218076353. The next prime is 87218076383. The reversal of 87218076356 is 65367081278.

It can be written as a sum of positive squares in only one way, i.e., 53061122500 + 34156953856 = 230350^2 + 184816^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87218076298 and 87218076307.

It is not an unprimeable number, because it can be changed into a prime (87218076353) 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, 10902259541 + ... + 10902259548.

It is an arithmetic number, because the mean of its divisors is an integer number (25438605605).

Almost surely, 2^87218076356 is an apocalyptic number.

It is an amenable number.

87218076356 is a deficient number, since it is larger than the sum of its proper divisors (65413557274).

87218076356 is a wasteful number, since it uses less digits than its factorization.

87218076356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21804519093 (or 21804519091 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 87218076356 in words is "eighty-seven billion, two hundred eighteen million, seventy-six thousand, three hundred fifty-six".