978990265023 has 8 divisors (see below), whose sum is σ = 1305342133248. Its totient is φ = 652649286744.

The previous prime is 978990265009. The next prime is 978990265039. The reversal of 978990265023 is 320562099879.

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

It is a de Polignac number, because none of the positive numbers 2^k-978990265023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978990265523) 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, 2510361 + ... + 2874002.

It is an arithmetic number, because the mean of its divisors is an integer number (163167766656).

Almost surely, 2^978990265023 is an apocalyptic number.

978990265023 is a deficient number, since it is larger than the sum of its proper divisors (326351868225).

978990265023 is a wasteful number, since it uses less digits than its factorization.

978990265023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5444973.

The product of its (nonzero) digits is 14696640, while the sum is 60.

The spelling of 978990265023 in words is "nine hundred seventy-eight billion, nine hundred ninety million, two hundred sixty-five thousand, twenty-three".