2123661450 has 24 divisors (see below), whose sum is σ = 5266680768. Its totient is φ = 566309680.

The previous prime is 2123661443. The next prime is 2123661467. The reversal of 2123661450 is 541663212.

It is a super-2 number, since 2×2123661450² = 9019875908432205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7078722 + ... + 7079021.

It is an arithmetic number, because the mean of its divisors is an integer number (219445032).

Almost surely, 2^2123661450 is an apocalyptic number.

2123661450 is an abundant number, since it is smaller than the sum of its proper divisors (3143019318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123661450 is a wasteful number, since it uses less digits than its factorization.

2123661450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14157758 (or 14157753 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2123661450 is about 46083.2013861884. The cubic root of 2123661450 is about 1285.3707943963.

The spelling of 2123661450 in words is "two billion, one hundred twenty-three million, six hundred sixty-one thousand, four hundred fifty".