66912935853 has 8 divisors (see below), whose sum is σ = 89218530400. Its totient is φ = 44607982608.

The previous prime is 66912935849. The next prime is 66912935861. The reversal of 66912935853 is 35853921966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66912935853 - 2² = 66912935849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66912935793 and 66912935802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66912933853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196743 + ... + 415371.

It is an arithmetic number, because the mean of its divisors is an integer number (11152316300).

Almost surely, 2^66912935853 is an apocalyptic number.

It is an amenable number.

66912935853 is a deficient number, since it is larger than the sum of its proper divisors (22305594547).

66912935853 is a wasteful number, since it uses less digits than its factorization.

66912935853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320651.

The product of its digits is 10497600, while the sum is 57.

The spelling of 66912935853 in words is "sixty-six billion, nine hundred twelve million, nine hundred thirty-five thousand, eight hundred fifty-three".