51452140123 has 4 divisors (see below), whose sum is σ = 51951675568. Its totient is φ = 50952604680.

The previous prime is 51452140099. The next prime is 51452140219. The reversal of 51452140123 is 32104125415.

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 51452140123 - 2²¹ = 51450042971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51452140091 and 51452140100.

It is not an unprimeable number, because it can be changed into a prime (51452144123) 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, 249767568 + ... + 249767773.

It is an arithmetic number, because the mean of its divisors is an integer number (12987918892).

Almost surely, 2^51452140123 is an apocalyptic number.

51452140123 is a deficient number, since it is larger than the sum of its proper divisors (499535445).

51452140123 is a wasteful number, since it uses less digits than its factorization.

51452140123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499535444.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 51452140123 its reverse (32104125415), we get a palindrome (83556265538).

The spelling of 51452140123 in words is "fifty-one billion, four hundred fifty-two million, one hundred forty thousand, one hundred twenty-three".