87815873021448 has 128 divisors (see below), whose sum is σ = 257923970841600. Its totient is φ = 24563573433600.

The previous prime is 87815873021447. The next prime is 87815873021473. The reversal of 87815873021448 is 84412037851878.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (87815873021447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 544821493 + ... + 544982651.

It is an arithmetic number, because the mean of its divisors is an integer number (2015031022200).

Almost surely, 2^{87815873021448} is an apocalyptic number.

87815873021448 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

87815873021448 is an abundant number, since it is smaller than the sum of its proper divisors (170108097820152).

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

87815873021448 is a wasteful number, since it uses less digits than its factorization.

87815873021448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319963 (or 319959 counting only the distinct ones).

The product of its (nonzero) digits is 96337920, while the sum is 66.

The spelling of 87815873021448 in words is "eighty-seven trillion, eight hundred fifteen billion, eight hundred seventy-three million, twenty-one thousand, four hundred forty-eight".