51476487846 has 128 divisors (see below), whose sum is σ = 128029655040. Its totient is φ = 13464921600.

The previous prime is 51476487833. The next prime is 51476487847. The reversal of 51476487846 is 64878467415.

It is a self number, because there is not a number n which added to its sum of digits gives 51476487846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51476487847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28967310 + ... + 28969086.

It is an arithmetic number, because the mean of its divisors is an integer number (1000231680).

Almost surely, 2^51476487846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51476487846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64014827520).

51476487846 is an abundant number, since it is smaller than the sum of its proper divisors (76553167194).

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

51476487846 is a wasteful number, since it uses less digits than its factorization.

51476487846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010.

The product of its digits is 36126720, while the sum is 60.

The spelling of 51476487846 in words is "fifty-one billion, four hundred seventy-six million, four hundred eighty-seven thousand, eight hundred forty-six".