898856663040 has 1920 divisors, whose sum is σ = 3945440378880. Its totient is φ = 191294078976.

The previous prime is 898856663039. The next prime is 898856663041. The reversal of 898856663040 is 40366658898.

It is an interprime number because it is at equal distance from previous prime (898856663039) and next prime (898856663041).

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898856663041) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 7077611457 + ... + 7077611583.

It is an arithmetic number, because the mean of its divisors is an integer number (2054916864).

Almost surely, 2^898856663040 is an apocalyptic number.

898856663040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 898856663040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1972720189440).

898856663040 is an abundant number, since it is smaller than the sum of its proper divisors (3046583715840).

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

898856663040 is a wasteful number, since it uses less digits than its factorization.

898856663040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 63.

The spelling of 898856663040 in words is "eight hundred ninety-eight billion, eight hundred fifty-six million, six hundred sixty-three thousand, forty".