51605105106 has 32 divisors (see below), whose sum is σ = 114032769408. Its totient is φ = 15485930240.

The previous prime is 51605105099. The next prime is 51605105117. The reversal of 51605105106 is 60150150615.

51605105106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10996185 + ... + 11000876.

It is an arithmetic number, because the mean of its divisors is an integer number (3563524044).

Almost surely, 2^51605105106 is an apocalyptic number.

51605105106 is an abundant number, since it is smaller than the sum of its proper divisors (62427664302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51605105106 is a wasteful number, since it uses less digits than its factorization.

51605105106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21997106.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 51605105106 in words is "fifty-one billion, six hundred five million, one hundred five thousand, one hundred six".