978686096305 has 4 divisors (see below), whose sum is σ = 1174423315572. Its totient is φ = 782948877040.

The previous prime is 978686096291. The next prime is 978686096363. The reversal of 978686096305 is 503690686879.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 616061730816 + 362624365489 = 784896^2 + 602183^2 .

It is a de Polignac number, because none of the positive numbers 2^k-978686096305 is a prime.

It is a super-3 number, since 3×978686096305³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97868609626 + ... + 97868609635.

It is an arithmetic number, because the mean of its divisors is an integer number (293605828893).

Almost surely, 2^978686096305 is an apocalyptic number.

It is an amenable number.

978686096305 is a deficient number, since it is larger than the sum of its proper divisors (195737219267).

978686096305 is a wasteful number, since it uses less digits than its factorization.

978686096305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195737219266.

The product of its (nonzero) digits is 117573120, while the sum is 67.

The spelling of 978686096305 in words is "nine hundred seventy-eight billion, six hundred eighty-six million, ninety-six thousand, three hundred five".