21834725106 has 16 divisors (see below), whose sum is σ = 43674207264. Its totient is φ = 7277448864.

The previous prime is 21834725089. The next prime is 21834725113. The reversal of 21834725106 is 60152743812.

It is a super-2 number, since 2×21834725106² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137091 + ... + 249926.

It is an arithmetic number, because the mean of its divisors is an integer number (2729637954).

Almost surely, 2^21834725106 is an apocalyptic number.

21834725106 is an abundant number, since it is smaller than the sum of its proper divisors (21839482158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21834725106 is a wasteful number, since it uses less digits than its factorization.

21834725106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396425.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 21834725106 in words is "twenty-one billion, eight hundred thirty-four million, seven hundred twenty-five thousand, one hundred six".