21843762099 has 8 divisors (see below), whose sum is σ = 29126582160. Its totient is φ = 14561725056.

The previous prime is 21843762079. The next prime is 21843762169. The reversal of 21843762099 is 99026734812.

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

It is not a de Polignac number, because 21843762099 - 2⁹ = 21843761587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21843762049) 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, 127234 + ... + 244695.

It is an arithmetic number, because the mean of its divisors is an integer number (3640822770).

Almost surely, 2^21843762099 is an apocalyptic number.

21843762099 is a deficient number, since it is larger than the sum of its proper divisors (7282820061).

21843762099 is a wasteful number, since it uses less digits than its factorization.

21843762099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391509.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 21843762099 in words is "twenty-one billion, eight hundred forty-three million, seven hundred sixty-two thousand, ninety-nine".