51163123602 has 64 divisors (see below), whose sum is σ = 111950512128. Its totient is φ = 15518112000.

The previous prime is 51163123567. The next prime is 51163123643. The reversal of 51163123602 is 20632136115.

It is a self number, because there is not a number n which added to its sum of digits gives 51163123602.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3442327 + ... + 3457157.

It is an arithmetic number, because the mean of its divisors is an integer number (1749226752).

Almost surely, 2^51163123602 is an apocalyptic number.

51163123602 is an abundant number, since it is smaller than the sum of its proper divisors (60787388526).

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

51163123602 is a wasteful number, since it uses less digits than its factorization.

51163123602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15975.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 51163123602 its reverse (20632136115), we get a palindrome (71795259717).

The spelling of 51163123602 in words is "fifty-one billion, one hundred sixty-three million, one hundred twenty-three thousand, six hundred two".