51847741656 has 48 divisors (see below), whose sum is σ = 145621749000. Its totient is φ = 17282579904.

The previous prime is 51847741639. The next prime is 51847741657. The reversal of 51847741656 is 65614774815.

51847741656 is a `hidden beast` number, since 5 + 1 + 8 + 477 + 4 + 165 + 6 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51847741657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13333381 + ... + 13337268.

Almost surely, 2^51847741656 is an apocalyptic number.

It is an amenable number.

51847741656 is an abundant number, since it is smaller than the sum of its proper divisors (93774007344).

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

51847741656 is a wasteful number, since it uses less digits than its factorization.

51847741656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26670670 (or 26670654 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The spelling of 51847741656 in words is "fifty-one billion, eight hundred forty-seven million, seven hundred forty-one thousand, six hundred fifty-six".