65477644996 has 27 divisors (see below), whose sum is σ = 115867199469. Its totient is φ = 32376743808.

The previous prime is 65477644943. The next prime is 65477645039. The reversal of 65477644996 is 69944677456.

The square root of 65477644996 is 255886.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 29401960900 + 36075684096 = 171470^2 + 189936^2 .

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 49641225 + ... + 49642543.

Almost surely, 2^65477644996 is an apocalyptic number.

65477644996 is the 255886-th square number.

It is an amenable number.

65477644996 is a deficient number, since it is larger than the sum of its proper divisors (50389554473).

65477644996 is an frugal number, since it uses more digits than its factorization.

65477644996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836 (or 1418 counting only the distinct ones).

The product of its digits is 274337280, while the sum is 67.

The spelling of 65477644996 in words is "sixty-five billion, four hundred seventy-seven million, six hundred forty-four thousand, nine hundred ninety-six".