51955230648 has 32 divisors (see below), whose sum is σ = 129893677200. Its totient is φ = 17317663488.

The previous prime is 51955230643. The next prime is 51955230659. The reversal of 51955230648 is 84603255915.

51955230648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51955230597 and 51955230606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51955230643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007148 + ... + 1057476.

Almost surely, 2^51955230648 is an apocalyptic number.

It is an amenable number.

51955230648 is an abundant number, since it is smaller than the sum of its proper divisors (77938446552).

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

51955230648 is a wasteful number, since it uses less digits than its factorization.

51955230648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93351 (or 93347 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 48.

The spelling of 51955230648 in words is "fifty-one billion, nine hundred fifty-five million, two hundred thirty thousand, six hundred forty-eight".