315785642066 has 16 divisors (see below), whose sum is σ = 475845236064. Its totient is φ = 157172099904.

The previous prime is 315785642047. The next prime is 315785642101. The reversal of 315785642066 is 660246587513.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 315785641999 and 315785642017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27881 + ... + 795203.

It is an arithmetic number, because the mean of its divisors is an integer number (29740327254).

Almost surely, 2^315785642066 is an apocalyptic number.

315785642066 is a deficient number, since it is larger than the sum of its proper divisors (160059593998).

315785642066 is a wasteful number, since it uses less digits than its factorization.

315785642066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768265.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 315785642066 in words is "three hundred fifteen billion, seven hundred eighty-five million, six hundred forty-two thousand, sixty-six".