65564936671970 has 32 divisors (see below), whose sum is σ = 124275233750400. Its totient is φ = 24836273675136.

The previous prime is 65564936671961. The next prime is 65564936671987. The reversal of 65564936671970 is 7917663946556.

It is a Smith number, since the sum of its digits (74) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64680035 + ... + 65685894.

It is an arithmetic number, because the mean of its divisors is an integer number (3883601054700).

Almost surely, 2^{65564936671970} is an apocalyptic number.

65564936671970 is a deficient number, since it is larger than the sum of its proper divisors (58710297078430).

65564936671970 is a wasteful number, since it uses less digits than its factorization.

65564936671970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130368602.

The product of its (nonzero) digits is 1543147200, while the sum is 74.

The spelling of 65564936671970 in words is "sixty-five trillion, five hundred sixty-four billion, nine hundred thirty-six million, six hundred seventy-one thousand, nine hundred seventy".