65380761504240 has 320 divisors, whose sum is σ = 255253982032896. Its totient is φ = 13473816846336.

The previous prime is 65380761504229. The next prime is 65380761504277. The reversal of 65380761504240 is 4240516708356.

It is a super-2 number, since 2×65380761504240² (a number of 28 digits) contains 22 as substring.

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, 33870469 + ... + 35748708.

Almost surely, 2^{65380761504240} is an apocalyptic number.

65380761504240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65380761504240 is an abundant number, since it is smaller than the sum of its proper divisors (189873220528656).

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

65380761504240 is a wasteful number, since it uses less digits than its factorization.

65380761504240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69619256 (or 69619250 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 65380761504240 in words is "sixty-five trillion, three hundred eighty billion, seven hundred sixty-one million, five hundred four thousand, two hundred forty".