66050973504 has 112 divisors (see below), whose sum is σ = 200873563200. Its totient is φ = 21257768448.

The previous prime is 66050973481. The next prime is 66050973517. The reversal of 66050973504 is 40537905066.

66050973504 is a `hidden beast` number, since 6 + 6 + 0 + 50 + 97 + 3 + 504 = 666.

It is a super-2 number, since 2×66050973504² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66050973504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608922 + ... + 709145.

Almost surely, 2^66050973504 is an apocalyptic number.

66050973504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

66050973504 is an abundant number, since it is smaller than the sum of its proper divisors (134822589696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66050973504 is a wasteful number, since it uses less digits than its factorization.

66050973504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318117 (or 1318101 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 66050973504 in words is "sixty-six billion, fifty million, nine hundred seventy-three thousand, five hundred four".