65803251960 has 128 divisors (see below), whose sum is σ = 219604392000. Its totient is φ = 17526716928.

The previous prime is 65803251929. The next prime is 65803251973. The reversal of 65803251960 is 6915230856.

65803251960 is a `hidden beast` number, since 6 + 580 + 3 + 2 + 5 + 1 + 9 + 60 = 666.

It is a super-2 number, since 2×65803251960² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 885526 + ... + 956954.

Almost surely, 2^65803251960 is an apocalyptic number.

65803251960 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 65803251960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109802196000).

65803251960 is an abundant number, since it is smaller than the sum of its proper divisors (153801140040).

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

65803251960 is a wasteful number, since it uses less digits than its factorization.

65803251960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72302 (or 72292 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 65803251960 in words is "sixty-five billion, eight hundred three million, two hundred fifty-one thousand, nine hundred sixty".