978312265897 has 8 divisors (see below), whose sum is σ = 992802470400. Its totient is φ = 963851484960.

The previous prime is 978312265873. The next prime is 978312265949. The reversal of 978312265897 is 798562213879.

978312265897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-978312265897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978312265837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7288897 + ... + 7421902.

It is an arithmetic number, because the mean of its divisors is an integer number (124100308800).

Almost surely, 2^978312265897 is an apocalyptic number.

It is an amenable number.

978312265897 is a deficient number, since it is larger than the sum of its proper divisors (14490204503).

978312265897 is a wasteful number, since it uses less digits than its factorization.

978312265897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14711783.

The product of its digits is 91445760, while the sum is 67.

The spelling of 978312265897 in words is "nine hundred seventy-eight billion, three hundred twelve million, two hundred sixty-five thousand, eight hundred ninety-seven".