51325501520123 has 4 divisors (see below), whose sum is σ = 51463103401248. Its totient is φ = 51187899639000.

The previous prime is 51325501520093. The next prime is 51325501520143. The reversal of 51325501520123 is 32102510552315.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51325501520123 - 2⁸ = 51325501519867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51325501520143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68800940003 + ... + 68800940748.

It is an arithmetic number, because the mean of its divisors is an integer number (12865775850312).

Almost surely, 2^{51325501520123} is an apocalyptic number.

51325501520123 is a deficient number, since it is larger than the sum of its proper divisors (137601881125).

51325501520123 is a wasteful number, since it uses less digits than its factorization.

51325501520123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137601881124.

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 51325501520123 in words is "fifty-one trillion, three hundred twenty-five billion, five hundred one million, five hundred twenty thousand, one hundred twenty-three".