65206533040 has 160 divisors (see below), whose sum is σ = 168437719296. Its totient is φ = 23277818880.

The previous prime is 65206532969. The next prime is 65206533053. The reversal of 65206533040 is 4033560256.

It is a super-2 number, since 2×65206533040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65206532987 and 65206533005.

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, 11902782 + ... + 11908258.

Almost surely, 2^65206533040 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 65206533040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84218859648).

65206533040 is an abundant number, since it is smaller than the sum of its proper divisors (103231186256).

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

65206533040 is a wasteful number, since it uses less digits than its factorization.

65206533040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747 (or 5741 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

The spelling of 65206533040 in words is "sixty-five billion, two hundred six million, five hundred thirty-three thousand, forty".