2124451651 has 8 divisors (see below), whose sum is σ = 2428821504. Its totient is φ = 1820301000.

The previous prime is 2124451643. The next prime is 2124451661. The reversal of 2124451651 is 1561544212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2124451651 - 2³ = 2124451643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124451661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33475 + ... + 73276.

It is an arithmetic number, because the mean of its divisors is an integer number (303602688).

Almost surely, 2^2124451651 is an apocalyptic number.

2124451651 is a deficient number, since it is larger than the sum of its proper divisors (304369853).

2124451651 is a wasteful number, since it uses less digits than its factorization.

2124451651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109601.

The product of its digits is 9600, while the sum is 31.

The square root of 2124451651 is about 46091.7742227396. The cubic root of 2124451651 is about 1285.5302007421.

Adding to 2124451651 its reverse (1561544212), we get a palindrome (3685995863).

The spelling of 2124451651 in words is "two billion, one hundred twenty-four million, four hundred fifty-one thousand, six hundred fifty-one".