87718931748 has 192 divisors, whose sum is σ = 263950848000. Its totient is φ = 24675425280.

The previous prime is 87718931747. The next prime is 87718931749. The reversal of 87718931748 is 84713981778.

It is an interprime number because it is at equal distance from previous prime (87718931747) and next prime (87718931749).

It is a super-2 number, since 2×87718931748² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (87718931747) 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 in 63 ways as a sum of consecutive naturals, for example, 14590063 + ... + 14596073.

It is an arithmetic number, because the mean of its divisors is an integer number (1374744000).

Almost surely, 2^87718931748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87718931748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131975424000).

87718931748 is an abundant number, since it is smaller than the sum of its proper divisors (176231916252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87718931748 is a wasteful number, since it uses less digits than its factorization.

87718931748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6327 (or 6319 counting only the distinct ones).

The product of its digits is 18966528, while the sum is 63.

The spelling of 87718931748 in words is "eighty-seven billion, seven hundred eighteen million, nine hundred thirty-one thousand, seven hundred forty-eight".