98869778716590 has 256 divisors, whose sum is σ = 319160113920000. Its totient is φ = 21261589088256.

The previous prime is 98869778716567. The next prime is 98869778716603. The reversal of 98869778716590 is 9561787796889.

It is a happy number.

98869778716590 is a `hidden beast` number, since 9 + 8 + 8 + 6 + 9 + 7 + 7 + 8 + 7 + 1 + 6 + 590 = 666.

It is a Harshad number since it is a multiple of its sum of digits (90).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 98869778716590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 86407536 + ... + 87544284.

It is an arithmetic number, because the mean of its divisors is an integer number (1246719195000).

Almost surely, 2^{98869778716590} is an apocalyptic number.

98869778716590 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 98869778716590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159580056960000).

98869778716590 is an abundant number, since it is smaller than the sum of its proper divisors (220290335203410).

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

98869778716590 is a wasteful number, since it uses less digits than its factorization.

98869778716590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139496 (or 1139490 counting only the distinct ones).

The product of its (nonzero) digits is 23044331520, while the sum is 90.

The spelling of 98869778716590 in words is "ninety-eight trillion, eight hundred sixty-nine billion, seven hundred seventy-eight million, seven hundred sixteen thousand, five hundred ninety".