65263409108 has 6 divisors (see below), whose sum is σ = 114210965946. Its totient is φ = 32631704552.

The previous prime is 65263409089. The next prime is 65263409191. The reversal of 65263409108 is 80190436256.

It can be written as a sum of positive squares in only one way, i.e., 59652200644 + 5611208464 = 244238^2 + 74908^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8157926135 + ... + 8157926142.

It is an arithmetic number, because the mean of its divisors is an integer number (19035160991).

Almost surely, 2^65263409108 is an apocalyptic number.

It is an amenable number.

65263409108 is a deficient number, since it is larger than the sum of its proper divisors (48947556838).

65263409108 is a wasteful number, since it uses less digits than its factorization.

65263409108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16315852281 (or 16315852279 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 65263409108 in words is "sixty-five billion, two hundred sixty-three million, four hundred nine thousand, one hundred eight".