65898255456 has 768 divisors, whose sum is σ = 234101145600. Its totient is φ = 17799782400.

The previous prime is 65898255433. The next prime is 65898255509. The reversal of 65898255456 is 65455289856.

65898255456 is a `hidden beast` number, since 6 + 5 + 8 + 9 + 82 + 5 + 545 + 6 = 666.

Its product of digits (103680000) is a multiple of the sum of its prime factors (360).

It is a junction number, because it is equal to n+sod(n) for n = 65898255393 and 65898255402.

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, 295507761 + ... + 295507983.

It is an arithmetic number, because the mean of its divisors is an integer number (304819200).

Almost surely, 2^65898255456 is an apocalyptic number.

65898255456 is a gapful number since it is divisible by the number (66) 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 65898255456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117050572800).

65898255456 is an abundant number, since it is smaller than the sum of its proper divisors (168202890144).

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

65898255456 is a wasteful number, since it uses less digits than its factorization.

65898255456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 346 counting only the distinct ones).

The product of its digits is 103680000, while the sum is 63.

The spelling of 65898255456 in words is "sixty-five billion, eight hundred ninety-eight million, two hundred fifty-five thousand, four hundred fifty-six".