989658716475 has 384 divisors, whose sum is σ = 2060668108800. Its totient is φ = 412439040000.

The previous prime is 989658716471. The next prime is 989658716491. The reversal of 989658716475 is 574617856989.

989658716475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 989658716475 - 2² = 989658716471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is a junction number, because it is equal to n+sod(n) for n = 989658716397 and 989658716406.

It is not an unprimeable number, because it can be changed into a prime (989658716471) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1076886066 + ... + 1076886984.

It is an arithmetic number, because the mean of its divisors is an integer number (5366323200).

Almost surely, 2^989658716475 is an apocalyptic number.

989658716475 is an abundant number, since it is smaller than the sum of its proper divisors (1071009392325).

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

989658716475 is a wasteful number, since it uses less digits than its factorization.

989658716475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1102 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 75.

The spelling of 989658716475 in words is "nine hundred eighty-nine billion, six hundred fifty-eight million, seven hundred sixteen thousand, four hundred seventy-five".