65560964544 has 196 divisors, whose sum is σ = 201353684160. Its totient is φ = 21148231680.

The previous prime is 65560964527. The next prime is 65560964603. The reversal of 65560964544 is 44546906556.

65560964544 is a `hidden beast` number, since 6 + 5 + 5 + 6 + 0 + 96 + 4 + 544 = 666.

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 27 ways as a sum of consecutive naturals, for example, 1423672 + ... + 1469000.

Almost surely, 2^65560964544 is an apocalyptic number.

65560964544 is a gapful number since it is divisible by the number (64) 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 65560964544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100676842080).

65560964544 is an abundant number, since it is smaller than the sum of its proper divisors (135792719616).

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

65560964544 is an equidigital number, since it uses as much as digits as its factorization.

65560964544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45390 (or 45365 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 54.

The spelling of 65560964544 in words is "sixty-five billion, five hundred sixty million, nine hundred sixty-four thousand, five hundred forty-four".