87985447296 has 48 divisors (see below), whose sum is σ = 233726785140. Its totient is φ = 29326544896.

The previous prime is 87985447153. The next prime is 87985447337. The reversal of 87985447296 is 69274458978.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 87985447296.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5805040 + ... + 5820176.

Almost surely, 2^87985447296 is an apocalyptic number.

It is an amenable number.

87985447296 is an abundant number, since it is smaller than the sum of its proper divisors (145741337844).

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

87985447296 is an frugal number, since it uses more digits than its factorization.

87985447296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30291 (or 15142 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 69.

The spelling of 87985447296 in words is "eighty-seven billion, nine hundred eighty-five million, four hundred forty-seven thousand, two hundred ninety-six".