66513263470 has 32 divisors (see below), whose sum is σ = 126779639616. Its totient is φ = 25037683200.

The previous prime is 66513263449. The next prime is 66513263563. The reversal of 66513263470 is 7436231566.

It is a congruent 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, 2636215 + ... + 2661325.

It is an arithmetic number, because the mean of its divisors is an integer number (3961863738).

Almost surely, 2^66513263470 is an apocalyptic number.

66513263470 is a deficient number, since it is larger than the sum of its proper divisors (60266376146).

66513263470 is a wasteful number, since it uses less digits than its factorization.

66513263470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40716.

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 66513263470 in words is "sixty-six billion, five hundred thirteen million, two hundred sixty-three thousand, four hundred seventy".