65267795538 has 96 divisors (see below), whose sum is σ = 158680372032. Its totient is φ = 19214236800.

The previous prime is 65267795519. The next prime is 65267795539. The reversal of 65267795538 is 83559776256.

65267795538 is a `hidden beast` number, since 6 + 5 + 2 + 6 + 7 + 7 + 95 + 538 = 666.

It is not an unprimeable number, because it can be changed into a prime (65267795539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5055820 + ... + 5068712.

It is an arithmetic number, because the mean of its divisors is an integer number (1652920542).

Almost surely, 2^65267795538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65267795538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79340186016).

65267795538 is an abundant number, since it is smaller than the sum of its proper divisors (93412576494).

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

65267795538 is a wasteful number, since it uses less digits than its factorization.

65267795538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13640 (or 13637 counting only the distinct ones).

The product of its digits is 95256000, while the sum is 63.

The spelling of 65267795538 in words is "sixty-five billion, two hundred sixty-seven million, seven hundred ninety-five thousand, five hundred thirty-eight".