65759979543 has 16 divisors (see below), whose sum is σ = 89353363680. Its totient is φ = 43003643904.

The previous prime is 65759979541. The next prime is 65759979559. The reversal of 65759979543 is 34597995756.

It is not a de Polignac number, because 65759979543 - 2¹ = 65759979541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65759979541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748455 + ... + 831687.

It is an arithmetic number, because the mean of its divisors is an integer number (5584585230).

Almost surely, 2^65759979543 is an apocalyptic number.

65759979543 is a deficient number, since it is larger than the sum of its proper divisors (23593384137).

65759979543 is a wasteful number, since it uses less digits than its factorization.

65759979543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88258.

The product of its digits is 321489000, while the sum is 69.

The spelling of 65759979543 in words is "sixty-five billion, seven hundred fifty-nine million, nine hundred seventy-nine thousand, five hundred forty-three".