98857900978584 has 192 divisors, whose sum is σ = 272737445137920. Its totient is φ = 29837635027200.

The previous prime is 98857900978579. The next prime is 98857900978589. The reversal of 98857900978584 is 48587900975889.

It is an interprime number because it is at equal distance from previous prime (98857900978579) and next prime (98857900978589).

It is a self number, because there is not a number n which added to its sum of digits gives 98857900978584.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98857900978589) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2988161707 + ... + 2988194789.

It is an arithmetic number, because the mean of its divisors is an integer number (1420507526760).

Almost surely, 2^{98857900978584} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98857900978584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136368722568960).

98857900978584 is an abundant number, since it is smaller than the sum of its proper divisors (173879544159336).

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

98857900978584 is a wasteful number, since it uses less digits than its factorization.

98857900978584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37182 (or 37167 counting only the distinct ones).

The product of its (nonzero) digits is 14631321600, while the sum is 87.

The spelling of 98857900978584 in words is "ninety-eight trillion, eight hundred fifty-seven billion, nine hundred million, nine hundred seventy-eight thousand, five hundred eighty-four".