65288781642 has 64 divisors (see below), whose sum is σ = 158549886720. Its totient is φ = 17523910656.

The previous prime is 65288781619. The next prime is 65288781643. The reversal of 65288781642 is 24618788256.

It is not an unprimeable number, because it can be changed into a prime (65288781643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 679303 + ... + 769434.

It is an arithmetic number, because the mean of its divisors is an integer number (2477341980).

Almost surely, 2^65288781642 is an apocalyptic number.

65288781642 is an abundant number, since it is smaller than the sum of its proper divisors (93261105078).

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

65288781642 is a wasteful number, since it uses less digits than its factorization.

65288781642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448815.

The product of its digits is 10321920, while the sum is 57.

The spelling of 65288781642 in words is "sixty-five billion, two hundred eighty-eight million, seven hundred eighty-one thousand, six hundred forty-two".