65542201565 has 32 divisors (see below), whose sum is σ = 79756924416. Its totient is φ = 51703142400.

The previous prime is 65542201547. The next prime is 65542201573. The reversal of 65542201565 is 56510224556.

It is a de Polignac number, because none of the positive numbers 2^k-65542201565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79637744 + ... + 79638566.

It is an arithmetic number, because the mean of its divisors is an integer number (2492403888).

Almost surely, 2^65542201565 is an apocalyptic number.

It is an amenable number.

65542201565 is a deficient number, since it is larger than the sum of its proper divisors (14214722851).

65542201565 is a wasteful number, since it uses less digits than its factorization.

65542201565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 65542201565 in words is "sixty-five billion, five hundred forty-two million, two hundred one thousand, five hundred sixty-five".