65061072539 has 4 divisors (see below), whose sum is σ = 65105851056. Its totient is φ = 65016294024.

The previous prime is 65061072497. The next prime is 65061072607. The reversal of 65061072539 is 93527016056.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65061072539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65061072539.

It is not an unprimeable number, because it can be changed into a prime (65061077539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22387079 + ... + 22389984.

It is an arithmetic number, because the mean of its divisors is an integer number (16276462764).

Almost surely, 2^65061072539 is an apocalyptic number.

65061072539 is a deficient number, since it is larger than the sum of its proper divisors (44778517).

65061072539 is a wasteful number, since it uses less digits than its factorization.

65061072539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44778516.

The product of its (nonzero) digits is 340200, while the sum is 44.

The spelling of 65061072539 in words is "sixty-five billion, sixty-one million, seventy-two thousand, five hundred thirty-nine".