21524134606 has 16 divisors (see below), whose sum is σ = 34799497488. Its totient is φ = 9925718400.

The previous prime is 21524134561. The next prime is 21524134627. The reversal of 21524134606 is 60643142512.

It is a congruent number.

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, 323035 + ... + 383926.

It is an arithmetic number, because the mean of its divisors is an integer number (2174968593).

Almost surely, 2^21524134606 is an apocalyptic number.

21524134606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21524134606 is a deficient number, since it is larger than the sum of its proper divisors (13275362882).

21524134606 is a wasteful number, since it uses less digits than its factorization.

21524134606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708147.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 21524134606 in words is "twenty-one billion, five hundred twenty-four million, one hundred thirty-four thousand, six hundred six".