51651066111 has 8 divisors (see below), whose sum is σ = 68872133424. Its totient is φ = 34432021440.

The previous prime is 51651066079. The next prime is 51651066133. The reversal of 51651066111 is 11166015615.

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

It is not a de Polignac number, because 51651066111 - 2⁵ = 51651066079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51651066161) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 445036 + ... + 548961.

It is an arithmetic number, because the mean of its divisors is an integer number (8609016678).

Almost surely, 2^51651066111 is an apocalyptic number.

51651066111 is a deficient number, since it is larger than the sum of its proper divisors (17221067313).

51651066111 is a wasteful number, since it uses less digits than its factorization.

51651066111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011321.

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 51651066111 in words is "fifty-one billion, six hundred fifty-one million, sixty-six thousand, one hundred eleven".