21234063741 has 24 divisors (see below), whose sum is σ = 32809615584. Its totient is φ = 12112116480.

The previous prime is 21234063731. The next prime is 21234063761. The reversal of 21234063741 is 14736043212.

It is not a de Polignac number, because 21234063741 - 2⁶ = 21234063677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234063731) 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 23 ways as a sum of consecutive naturals, for example, 1103710 + ... + 1122783.

It is an arithmetic number, because the mean of its divisors is an integer number (1367067316).

Almost surely, 2^21234063741 is an apocalyptic number.

It is an amenable number.

21234063741 is a deficient number, since it is larger than the sum of its proper divisors (11575551843).

21234063741 is a wasteful number, since it uses less digits than its factorization.

21234063741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226541 (or 2226524 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 21234063741 in words is "twenty-one billion, two hundred thirty-four million, sixty-three thousand, seven hundred forty-one".