51738919236 has 48 divisors (see below), whose sum is σ = 134274672000. Its totient is φ = 17228726496.

The previous prime is 51738919223. The next prime is 51738919249. The reversal of 51738919236 is 63291983715.

51738919236 is a `hidden beast` number, since 5 + 17 + 389 + 19 + 236 = 666.

It is an interprime number because it is at equal distance from previous prime (51738919223) and next prime (51738919249).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137511 + ... + 349838.

It is an arithmetic number, because the mean of its divisors is an integer number (2797389000).

Almost surely, 2^51738919236 is an apocalyptic number.

It is an amenable number.

51738919236 is an abundant number, since it is smaller than the sum of its proper divisors (82535752764).

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

51738919236 is a wasteful number, since it uses less digits than its factorization.

51738919236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488345 (or 488337 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The spelling of 51738919236 in words is "fifty-one billion, seven hundred thirty-eight million, nine hundred nineteen thousand, two hundred thirty-six".