51145125760 has 64 divisors (see below), whose sum is σ = 127584888480. Its totient is φ = 19568564224.

The previous prime is 51145125749. The next prime is 51145125761. The reversal of 51145125760 is 6752154115.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51145125761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1722547 + ... + 1751986.

Almost surely, 2^51145125760 is an apocalyptic number.

It is an amenable number.

51145125760 is an abundant number, since it is smaller than the sum of its proper divisors (76439762720).

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

51145125760 is a wasteful number, since it uses less digits than its factorization.

51145125760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474575 (or 3474563 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 37.

Adding to 51145125760 its reverse (6752154115), we get a palindrome (57897279875).

The spelling of 51145125760 in words is "fifty-one billion, one hundred forty-five million, one hundred twenty-five thousand, seven hundred sixty".