21829825754 has 8 divisors (see below), whose sum is σ = 35721533088. Its totient is φ = 9922648060.

The previous prime is 21829825753. The next prime is 21829825769. The reversal of 21829825754 is 45752892812.

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

It is a junction number, because it is equal to n+sod(n) for n = 21829825696 and 21829825705.

It is not an unprimeable number, because it can be changed into a prime (21829825753) 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, 496132382 + ... + 496132425.

It is an arithmetic number, because the mean of its divisors is an integer number (4465191636).

Almost surely, 2^21829825754 is an apocalyptic number.

21829825754 is a deficient number, since it is larger than the sum of its proper divisors (13891707334).

21829825754 is a wasteful number, since it uses less digits than its factorization.

21829825754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992264820.

The product of its digits is 3225600, while the sum is 53.

The spelling of 21829825754 in words is "twenty-one billion, eight hundred twenty-nine million, eight hundred twenty-five thousand, seven hundred fifty-four".