66912935854 has 8 divisors (see below), whose sum is σ = 105652004040. Its totient is φ = 31695601176.

The previous prime is 66912935849. The next prime is 66912935861. The reversal of 66912935854 is 45853921966.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880433329 + ... + 880433404.

It is an arithmetic number, because the mean of its divisors is an integer number (13206500505).

Almost surely, 2^66912935854 is an apocalyptic number.

66912935854 is a deficient number, since it is larger than the sum of its proper divisors (38739068186).

66912935854 is a wasteful number, since it uses less digits than its factorization.

66912935854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760866754.

The product of its digits is 13996800, while the sum is 58.

The spelling of 66912935854 in words is "sixty-six billion, nine hundred twelve million, nine hundred thirty-five thousand, eight hundred fifty-four".