51425766480 has 320 divisors, whose sum is σ = 176406709248. Its totient is φ = 12289351680.

The previous prime is 51425766473. The next prime is 51425766487. The reversal of 51425766480 is 8466752415.

It is an interprime number because it is at equal distance from previous prime (51425766473) and next prime (51425766487).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51425766487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86721064 + ... + 86721656.

Almost surely, 2^51425766480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51425766480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88203354624).

51425766480 is an abundant number, since it is smaller than the sum of its proper divisors (124980942768).

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

51425766480 is a wasteful number, since it uses less digits than its factorization.

51425766480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 51425766480 in words is "fifty-one billion, four hundred twenty-five million, seven hundred sixty-six thousand, four hundred eighty".