65474079784 has 8 divisors (see below), whose sum is σ = 122763899610. Its totient is φ = 32737039888.

The previous prime is 65474079719. The next prime is 65474079787. The reversal of 65474079784 is 48797047456.

It can be written as a sum of positive squares in only one way, i.e., 64622724100 + 851355684 = 254210^2 + 29178^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (65474079787) by changing a digit.

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 as a sum of consecutive naturals, namely, 4092129979 + ... + 4092129994.

Almost surely, 2^65474079784 is an apocalyptic number.

It is an amenable number.

65474079784 is a deficient number, since it is larger than the sum of its proper divisors (57289819826).

65474079784 is a wasteful number, since it uses less digits than its factorization.

65474079784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8184259979 (or 8184259975 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 61.

The spelling of 65474079784 in words is "sixty-five billion, four hundred seventy-four million, seventy-nine thousand, seven hundred eighty-four".