65153418376640 has 448 divisors, whose sum is σ = 176117407764480. Its totient is φ = 22743908352000.

The previous prime is 65153418376589. The next prime is 65153418376681. The reversal of 65153418376640 is 4667381435156.

It is a super-2 number, since 2×65153418376640² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65153418376640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8275547744 + ... + 8275555616.

It is an arithmetic number, because the mean of its divisors is an integer number (393119213760).

Almost surely, 2^{65153418376640} 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 65153418376640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058703882240).

65153418376640 is an abundant number, since it is smaller than the sum of its proper divisors (110963989387840).

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

65153418376640 is a wasteful number, since it uses less digits than its factorization.

65153418376640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8532 (or 8522 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 59.

The spelling of 65153418376640 in words is "sixty-five trillion, one hundred fifty-three billion, four hundred eighteen million, three hundred seventy-six thousand, six hundred forty".