66736736737004 has 48 divisors (see below), whose sum is σ = 118266354847872. Its totient is φ = 32948463787392.

The previous prime is 66736736736991. The next prime is 66736736737067. The reversal of 66736736737004 is 40073763763766.

It is a happy number.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors.

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, 388580519 + ... + 388752225.

It is an arithmetic number, because the mean of its divisors is an integer number (2463882392664).

Almost surely, 2^{66736736737004} is an apocalyptic number.

It is an amenable number.

66736736737004 is a deficient number, since it is larger than the sum of its proper divisors (51529618110868).

66736736737004 is a wasteful number, since it uses less digits than its factorization.

66736736737004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174782 (or 174780 counting only the distinct ones).

The product of its (nonzero) digits is 336063168, while the sum is 65.

The spelling of 66736736737004 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred thirty-six million, seven hundred thirty-seven thousand, four".