66858074356 has 12 divisors (see below), whose sum is σ = 120775876480. Its totient is φ = 32350681080.

The previous prime is 66858074347. The next prime is 66858074357. The reversal of 66858074356 is 65347085866.

It is a self number, because there is not a number n which added to its sum of digits gives 66858074356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66858074357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269588886 + ... + 269589133.

Almost surely, 2^66858074356 is an apocalyptic number.

It is an amenable number.

66858074356 is a deficient number, since it is larger than the sum of its proper divisors (53917802124).

66858074356 is a wasteful number, since it uses less digits than its factorization.

66858074356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539178054 (or 539178052 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 58.

The spelling of 66858074356 in words is "sixty-six billion, eight hundred fifty-eight million, seventy-four thousand, three hundred fifty-six".