51325120032 has 48 divisors (see below), whose sum is σ = 135153531072. Its totient is φ = 17054393600.

The previous prime is 51325120013. The next prime is 51325120039. The reversal of 51325120032 is 23002152315.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 51325119984 and 51325120011.

It is not an unprimeable number, because it can be changed into a prime (51325120039) 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, 812844 + ... + 873707.

It is an arithmetic number, because the mean of its divisors is an integer number (2815698564).

Almost surely, 2^51325120032 is an apocalyptic number.

It is an amenable number.

51325120032 is an abundant number, since it is smaller than the sum of its proper divisors (83828411040).

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

51325120032 is a wasteful number, since it uses less digits than its factorization.

51325120032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686881 (or 1686873 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 51325120032 its reverse (23002152315), we get a palindrome (74327272347).

The spelling of 51325120032 in words is "fifty-one billion, three hundred twenty-five million, one hundred twenty thousand, thirty-two".