66743137835 has 16 divisors (see below), whose sum is σ = 87439779072. Its totient is φ = 48503272800.

The previous prime is 66743137829. The next prime is 66743137843. The reversal of 66743137835 is 53873134766.

It is not a de Polignac number, because 66743137835 - 2¹⁶ = 66743072299 is a prime.

It is a Duffinian 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, 392351 + ... + 536120.

It is an arithmetic number, because the mean of its divisors is an integer number (5464986192).

Almost surely, 2^66743137835 is an apocalyptic number.

66743137835 is a deficient number, since it is larger than the sum of its proper divisors (20696641237).

66743137835 is a wasteful number, since it uses less digits than its factorization.

66743137835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929794.

The product of its digits is 7620480, while the sum is 53.

The spelling of 66743137835 in words is "sixty-six billion, seven hundred forty-three million, one hundred thirty-seven thousand, eight hundred thirty-five".