23784666133 has 4 divisors (see below), whose sum is σ = 23786008480. Its totient is φ = 23783323788.

The previous prime is 23784666131. The next prime is 23784666149. The reversal of 23784666133 is 33166648732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23784666133 - 2¹ = 23784666131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23784666131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644235 + ... + 680152.

It is an arithmetic number, because the mean of its divisors is an integer number (5946502120).

Almost surely, 2^23784666133 is an apocalyptic number.

It is an amenable number.

23784666133 is a deficient number, since it is larger than the sum of its proper divisors (1342347).

23784666133 is a wasteful number, since it uses less digits than its factorization.

23784666133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342346.

The product of its digits is 2612736, while the sum is 49.

The spelling of 23784666133 in words is "twenty-three billion, seven hundred eighty-four million, six hundred sixty-six thousand, one hundred thirty-three".