51477548976 has 600 divisors, whose sum is σ = 181718845440. Its totient is φ = 14010796800.

The previous prime is 51477548963. The next prime is 51477548999. The reversal of 51477548976 is 67984577415.

51477548976 is a `hidden beast` number, since 5 + 14 + 7 + 7 + 548 + 9 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 155521131 + ... + 155521461.

Almost surely, 2^51477548976 is an apocalyptic number.

51477548976 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51477548976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90859422720).

51477548976 is an abundant number, since it is smaller than the sum of its proper divisors (130241296464).

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

51477548976 is a wasteful number, since it uses less digits than its factorization.

51477548976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 453 counting only the distinct ones).

The product of its digits is 59270400, while the sum is 63.

The spelling of 51477548976 in words is "fifty-one billion, four hundred seventy-seven million, five hundred forty-eight thousand, nine hundred seventy-six".