63435875123 has 4 divisors (see below), whose sum is σ = 63467172600. Its totient is φ = 63404577648.

The previous prime is 63435875089. The next prime is 63435875131. The reversal of 63435875123 is 32157853436.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63435875123 is a prime.

It is a super-2 number, since 2×63435875123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63435875323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15645698 + ... + 15649751.

It is an arithmetic number, because the mean of its divisors is an integer number (15866793150).

Almost surely, 2^63435875123 is an apocalyptic number.

63435875123 is a deficient number, since it is larger than the sum of its proper divisors (31297477).

63435875123 is a wasteful number, since it uses less digits than its factorization.

63435875123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31297476.

The product of its digits is 1814400, while the sum is 47.

The spelling of 63435875123 in words is "sixty-three billion, four hundred thirty-five million, eight hundred seventy-five thousand, one hundred twenty-three".