65765977603 has 4 divisors (see below), whose sum is σ = 65767590448. Its totient is φ = 65764364760.

The previous prime is 65765977559. The next prime is 65765977609. The reversal of 65765977603 is 30677956756.

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-65765977603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65765977609) 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, 743628 + ... + 827353.

It is an arithmetic number, because the mean of its divisors is an integer number (16441897612).

Almost surely, 2^65765977603 is an apocalyptic number.

65765977603 is a deficient number, since it is larger than the sum of its proper divisors (1612845).

65765977603 is a wasteful number, since it uses less digits than its factorization.

65765977603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612844.

The product of its (nonzero) digits is 50009400, while the sum is 61.

The spelling of 65765977603 in words is "sixty-five billion, seven hundred sixty-five million, nine hundred seventy-seven thousand, six hundred three".