978240215000 has 80 divisors (see below), whose sum is σ = 2294138140800. Its totient is φ = 390933936000.

The previous prime is 978240214979. The next prime is 978240215011. The reversal of 978240215000 is 512042879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5345006 + ... + 5524994.

It is an arithmetic number, because the mean of its divisors is an integer number (28676726760).

Almost surely, 2^978240215000 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 978240215000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1147069070400).

978240215000 is an abundant number, since it is smaller than the sum of its proper divisors (1315897925800).

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

978240215000 is a wasteful number, since it uses less digits than its factorization.

978240215000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181102 (or 181083 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

Adding to 978240215000 its reverse (512042879), we get a palindrome (978752257879).

The spelling of 978240215000 in words is "nine hundred seventy-eight billion, two hundred forty million, two hundred fifteen thousand".