65368530040 has 64 divisors (see below), whose sum is σ = 160712436960. Its totient is φ = 23731499520.

The previous prime is 65368529983. The next prime is 65368530061. The reversal of 65368530040 is 4003586356.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 65368529975 and 65368530002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148542 + ... + 390898.

Almost surely, 2^65368530040 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 65368530040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80356218480).

65368530040 is an abundant number, since it is smaller than the sum of its proper divisors (95343906920).

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

65368530040 is a wasteful number, since it uses less digits than its factorization.

65368530040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242992 (or 242988 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 65368530040 in words is "sixty-five billion, three hundred sixty-eight million, five hundred thirty thousand, forty".