51308773236 has 36 divisors (see below), whose sum is σ = 148225345632. Its totient is φ = 14659649424.

The previous prime is 51308773223. The next prime is 51308773259. The reversal of 51308773236 is 63237780315.

51308773236 is a `hidden beast` number, since 513 + 0 + 8 + 77 + 32 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 51308773191 and 51308773200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101802870 + ... + 101803373.

It is an arithmetic number, because the mean of its divisors is an integer number (4117370712).

Almost surely, 2^51308773236 is an apocalyptic number.

It is an amenable number.

51308773236 is an abundant number, since it is smaller than the sum of its proper divisors (96916572396).

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

51308773236 is a wasteful number, since it uses less digits than its factorization.

51308773236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203606260 (or 203606255 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 51308773236 in words is "fifty-one billion, three hundred eight million, seven hundred seventy-three thousand, two hundred thirty-six".