2432121666 has 64 divisors (see below), whose sum is σ = 5416594176. Its totient is φ = 723168000.

The previous prime is 2432121649. The next prime is 2432121689. The reversal of 2432121666 is 6661212342.

2432121666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432996 + ... + 438576.

It is an arithmetic number, because the mean of its divisors is an integer number (84634284).

Almost surely, 2^2432121666 is an apocalyptic number.

2432121666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2432121666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2708297088).

2432121666 is an abundant number, since it is smaller than the sum of its proper divisors (2984472510).

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

2432121666 is a wasteful number, since it uses less digits than its factorization.

2432121666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5787.

The product of its digits is 20736, while the sum is 33.

The square root of 2432121666 is about 49316.5455602884. The cubic root of 2432121666 is about 1344.8125876801.

The spelling of 2432121666 in words is "two billion, four hundred thirty-two million, one hundred twenty-one thousand, six hundred sixty-six".