51302405020 has 48 divisors (see below), whose sum is σ = 113443827840. Its totient is φ = 19434309696.

The previous prime is 51302405017. The next prime is 51302405053. The reversal of 51302405020 is 2050420315.

It is a super-2 number, since 2×51302405020² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51302404982 and 51302405000.

It is a congruent number.

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, 1180599 + ... + 1223281.

It is an arithmetic number, because the mean of its divisors is an integer number (2363413080).

Almost surely, 2^51302405020 is an apocalyptic number.

It is an amenable number.

51302405020 is an abundant number, since it is smaller than the sum of its proper divisors (62141422820).

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

51302405020 is a wasteful number, since it uses less digits than its factorization.

51302405020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45874 (or 45872 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 51302405020 its reverse (2050420315), we get a palindrome (53352825335).

The spelling of 51302405020 in words is "fifty-one billion, three hundred two million, four hundred five thousand, twenty".