65571051655712 has 48 divisors (see below), whose sum is σ = 129711354416280. Its totient is φ = 32628713914368.

The previous prime is 65571051655643. The next prime is 65571051655741. The reversal of 65571051655712 is 21755615017556.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43066616250256 + 22504435405456 = 6562516^2 + 4743884^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5617214 + ... + 12755202.

Almost surely, 2^{65571051655712} is an apocalyptic number.

It is an amenable number.

65571051655712 is a deficient number, since it is larger than the sum of its proper divisors (64140302760568).

65571051655712 is a wasteful number, since it uses less digits than its factorization.

65571051655712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7139373 (or 7139365 counting only the distinct ones).

The product of its (nonzero) digits is 11025000, while the sum is 56.

The spelling of 65571051655712 in words is "sixty-five trillion, five hundred seventy-one billion, fifty-one million, six hundred fifty-five thousand, seven hundred twelve".