51862740480 has 1280 divisors, whose sum is σ = 216371865600. Its totient is φ = 11678515200.

The previous prime is 51862740467. The next prime is 51862740481. The reversal of 51862740480 is 8404726815.

51862740480 is a `hidden beast` number, since 5 + 18 + 627 + 4 + 0 + 4 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51862740481) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 513492430 + ... + 513492530.

It is an arithmetic number, because the mean of its divisors is an integer number (169040520).

Almost surely, 2^51862740480 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 51862740480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108185932800).

51862740480 is an abundant number, since it is smaller than the sum of its proper divisors (164509125120).

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

51862740480 is a wasteful number, since it uses less digits than its factorization.

51862740480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 51862740480 in words is "fifty-one billion, eight hundred sixty-two million, seven hundred forty thousand, four hundred eighty".