651145142430123 has 32 divisors (see below), whose sum is σ = 954615811276800. Its totient is φ = 391510498448160.

The previous prime is 651145142430049. The next prime is 651145142430127. The reversal of 651145142430123 is 321034241541156.

It is not a de Polignac number, because 651145142430123 - 2⁹ = 651145142429611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (651145142430127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102733228 + ... + 108887126.

It is an arithmetic number, because the mean of its divisors is an integer number (29831744102400).

Almost surely, 2^{651145142430123} is an apocalyptic number.

651145142430123 is a deficient number, since it is larger than the sum of its proper divisors (303470668846677).

651145142430123 is a wasteful number, since it uses less digits than its factorization.

651145142430123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6179287.

The product of its (nonzero) digits is 345600, while the sum is 42.

Adding to 651145142430123 its reverse (321034241541156), we get a palindrome (972179383971279).

The spelling of 651145142430123 in words is "six hundred fifty-one trillion, one hundred forty-five billion, one hundred forty-two million, four hundred thirty thousand, one hundred twenty-three".