51213340162 has 32 divisors (see below), whose sum is σ = 77643878400. Its totient is φ = 25334142288.

The previous prime is 51213340147. The next prime is 51213340181. The reversal of 51213340162 is 26104331215.

It is a self number, because there is not a number n which added to its sum of digits gives 51213340162.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77713389 + ... + 77714047.

It is an arithmetic number, because the mean of its divisors is an integer number (2426371200).

Almost surely, 2^51213340162 is an apocalyptic number.

51213340162 is a deficient number, since it is larger than the sum of its proper divisors (26430538238).

51213340162 is a wasteful number, since it uses less digits than its factorization.

51213340162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 51213340162 its reverse (26104331215), we get a palindrome (77317671377).

The spelling of 51213340162 in words is "fifty-one billion, two hundred thirteen million, three hundred forty thousand, one hundred sixty-two".