65775819412 has 12 divisors (see below), whose sum is σ = 115111202976. Its totient is φ = 32886904280.

The previous prime is 65775819409. The next prime is 65775819419. The reversal of 65775819412 is 21491857756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65775819419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93088 + ... + 374455.

It is an arithmetic number, because the mean of its divisors is an integer number (9592600248).

Almost surely, 2^65775819412 is an apocalyptic number.

It is an amenable number.

65775819412 is a deficient number, since it is larger than the sum of its proper divisors (49335383564).

65775819412 is a wasteful number, since it uses less digits than its factorization.

65775819412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502718 (or 502716 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 55.

The spelling of 65775819412 in words is "sixty-five billion, seven hundred seventy-five million, eight hundred nineteen thousand, four hundred twelve".