65248859640 has 32 divisors (see below), whose sum is σ = 195746579280. Its totient is φ = 17399695872.

The previous prime is 65248859639. The next prime is 65248859647. The reversal of 65248859640 is 4695884256.

It is a happy number.

65248859640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×65248859640³ (a number of 33 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65248859647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271870129 + ... + 271870368.

Almost surely, 2^65248859640 is an apocalyptic number.

65248859640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65248859640 is an abundant number, since it is smaller than the sum of its proper divisors (130497719640).

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

65248859640 is a wasteful number, since it uses less digits than its factorization.

65248859640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543740511 (or 543740507 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 57.

The spelling of 65248859640 in words is "sixty-five billion, two hundred forty-eight million, eight hundred fifty-nine thousand, six hundred forty".