51373954080 has 384 divisors, whose sum is σ = 189876960000. Its totient is φ = 12937273344.

The previous prime is 51373954069. The next prime is 51373954081. The reversal of 51373954080 is 8045937315.

51373954080 is a `hidden beast` number, since 513 + 7 + 3 + 9 + 54 + 0 + 80 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (51373954081) 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, 31928316 + ... + 31929924.

It is an arithmetic number, because the mean of its divisors is an integer number (494471250).

Almost surely, 2^51373954080 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 51373954080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94938480000).

51373954080 is an abundant number, since it is smaller than the sum of its proper divisors (138503005920).

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

51373954080 is a wasteful number, since it uses less digits than its factorization.

51373954080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 51373954080 in words is "fifty-one billion, three hundred seventy-three million, nine hundred fifty-four thousand, eighty".