978602561085 has 32 divisors (see below), whose sum is σ = 1602301396608. Its totient is φ = 509744148480.

The previous prime is 978602561077. The next prime is 978602561093. The reversal of 978602561085 is 580165206879.

978602561085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (978602561077) and next prime (978602561093).

It is not a de Polignac number, because 978602561085 - 2³ = 978602561077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9464265 + ... + 9567105.

It is an arithmetic number, because the mean of its divisors is an integer number (50071918644).

Almost surely, 2^978602561085 is an apocalyptic number.

It is an amenable number.

978602561085 is a deficient number, since it is larger than the sum of its proper divisors (623698835523).

978602561085 is a wasteful number, since it uses less digits than its factorization.

978602561085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117645.

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 978602561085 in words is "nine hundred seventy-eight billion, six hundred two million, five hundred sixty-one thousand, eighty-five".