2124698551 has 4 divisors (see below), whose sum is σ = 2124828504. Its totient is φ = 2124568600.

The previous prime is 2124698533. The next prime is 2124698561. The reversal of 2124698551 is 1558964212.

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 2124698551 - 2²⁵ = 2091144119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2124698498 and 2124698507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124698561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36205 + ... + 74566.

It is an arithmetic number, because the mean of its divisors is an integer number (531207126).

Almost surely, 2^2124698551 is an apocalyptic number.

2124698551 is a deficient number, since it is larger than the sum of its proper divisors (129953).

2124698551 is a wasteful number, since it uses less digits than its factorization.

2124698551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129952.

The product of its digits is 172800, while the sum is 43.

The square root of 2124698551 is about 46094.4524970196. The cubic root of 2124698551 is about 1285.5799994923.

The spelling of 2124698551 in words is "two billion, one hundred twenty-four million, six hundred ninety-eight thousand, five hundred fifty-one".