51153191966 has 16 divisors (see below), whose sum is σ = 77246087184. Its totient is φ = 25405017984.

The previous prime is 51153191923. The next prime is 51153192001. The reversal of 51153191966 is 66919135115.

It is a self number, because there is not a number n which added to its sum of digits gives 51153191966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66476 + ... + 326688.

It is an arithmetic number, because the mean of its divisors is an integer number (4827880449).

Almost surely, 2^51153191966 is an apocalyptic number.

51153191966 is a deficient number, since it is larger than the sum of its proper divisors (26092895218).

51153191966 is a wasteful number, since it uses less digits than its factorization.

51153191966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260875.

The product of its digits is 218700, while the sum is 47.

The spelling of 51153191966 in words is "fifty-one billion, one hundred fifty-three million, one hundred ninety-one thousand, nine hundred sixty-six".