87244893513 has 12 divisors (see below), whose sum is σ = 126334672308. Its totient is φ = 58018214400.

The previous prime is 87244893457. The next prime is 87244893517. The reversal of 87244893513 is 31539844278.

It is a happy number.

87244893513 is a `hidden beast` number, since 8 + 7 + 2 + 44 + 89 + 3 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 66570192144 + 20674701369 = 258012^2 + 143787^2 .

It is not a de Polignac number, because 87244893513 - 2¹⁶ = 87244827977 is a prime.

It is a super-2 number, since 2×87244893513² (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 87244893513.

It is not an unprimeable number, because it can be changed into a prime (87244893517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12083520 + ... + 12090737.

It is an arithmetic number, because the mean of its divisors is an integer number (10527889359).

Almost surely, 2^87244893513 is an apocalyptic number.

It is an amenable number.

87244893513 is a deficient number, since it is larger than the sum of its proper divisors (39089778795).

87244893513 is a wasteful number, since it uses less digits than its factorization.

87244893513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24174664 (or 24174661 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 87244893513 in words is "eighty-seven billion, two hundred forty-four million, eight hundred ninety-three thousand, five hundred thirteen".