66633901054 has 32 divisors (see below), whose sum is σ = 118226304000. Its totient is φ = 27559160160.

The previous prime is 66633901051. The next prime is 66633901067. The reversal of 66633901054 is 45010933666.

It is a self number, because there is not a number n which added to its sum of digits gives 66633901054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66633901051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 813099 + ... + 891289.

It is an arithmetic number, because the mean of its divisors is an integer number (3694572000).

Almost surely, 2^66633901054 is an apocalyptic number.

66633901054 is a deficient number, since it is larger than the sum of its proper divisors (51592402946).

66633901054 is a wasteful number, since it uses less digits than its factorization.

66633901054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80328.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 66633901054 in words is "sixty-six billion, six hundred thirty-three million, nine hundred one thousand, fifty-four".