4651540123 has 4 divisors (see below), whose sum is σ = 4651962040. Its totient is φ = 4651118208.

The previous prime is 4651540097. The next prime is 4651540139. The reversal of 4651540123 is 3210451564.

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 4651540123 - 2⁹ = 4651539611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4651540183) 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, 193965 + ... + 216622.

It is an arithmetic number, because the mean of its divisors is an integer number (1162990510).

Almost surely, 2^4651540123 is an apocalyptic number.

4651540123 is a deficient number, since it is larger than the sum of its proper divisors (421917).

4651540123 is a wasteful number, since it uses less digits than its factorization.

4651540123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421916.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 4651540123 is about 68202.2002797564. The cubic root of 4651540123 is about 1669.2917889401.

Adding to 4651540123 its reverse (3210451564), we get a palindrome (7861991687).

The spelling of 4651540123 in words is "four billion, six hundred fifty-one million, five hundred forty thousand, one hundred twenty-three".