65347856421120 has 4320 divisors, whose sum is σ = 302495144620032. Its totient is φ = 13421018677248.

The previous prime is 65347856421119. The next prime is 65347856421143. The reversal of 65347856421120 is 2112465874356.

65347856421120 is a `hidden beast` number, since 6 + 5 + 3 + 4 + 78 + 564 + 2 + 1 + 1 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (4320).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 514550050497 + ... + 514550050623.

Almost surely, 2^{65347856421120} is an apocalyptic number.

65347856421120 is a gapful number since it is divisible by the number (60) 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 65347856421120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151247572310016).

65347856421120 is an abundant number, since it is smaller than the sum of its proper divisors (237147288198912).

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

65347856421120 is an equidigital number, since it uses as much as digits as its factorization.

65347856421120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 65347856421120 in words is "sixty-five trillion, three hundred forty-seven billion, eight hundred fifty-six million, four hundred twenty-one thousand, one hundred twenty".