21827053743 has 32 divisors (see below), whose sum is σ = 32808644352. Its totient is φ = 12792864000.

The previous prime is 21827053741. The next prime is 21827053747. The reversal of 21827053743 is 34735072812.

It is a happy number.

It is not a de Polignac number, because 21827053743 - 2¹ = 21827053741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21827053695 and 21827053704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21827053741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67171 + ... + 219467.

It is an arithmetic number, because the mean of its divisors is an integer number (1025270136).

Almost surely, 2^21827053743 is an apocalyptic number.

21827053743 is a deficient number, since it is larger than the sum of its proper divisors (10981590609).

21827053743 is a wasteful number, since it uses less digits than its factorization.

21827053743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152455.

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 21827053743 in words is "twenty-one billion, eight hundred twenty-seven million, fifty-three thousand, seven hundred forty-three".