87218009246 has 16 divisors (see below), whose sum is σ = 132141745008. Its totient is φ = 43170888000.

The previous prime is 87218009243. The next prime is 87218009273. The reversal of 87218009246 is 64290081278.

It is a happy number.

It is a super-2 number, since 2×87218009246² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87218009246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87218009243) 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, 1538261 + ... + 1593951.

It is an arithmetic number, because the mean of its divisors is an integer number (8258859063).

Almost surely, 2^87218009246 is an apocalyptic number.

87218009246 is a deficient number, since it is larger than the sum of its proper divisors (44923735762).

87218009246 is a wasteful number, since it uses less digits than its factorization.

87218009246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63547.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 87218009246 in words is "eighty-seven billion, two hundred eighteen million, nine thousand, two hundred forty-six".