21604153030526 has 16 divisors (see below), whose sum is σ = 35353408366080. Its totient is φ = 9819747905880.

The previous prime is 21604153030513. The next prime is 21604153030591. The reversal of 21604153030526 is 62503035140612.

It is a self number, because there is not a number n which added to its sum of digits gives 21604153030526.

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, 15395096 + ... + 16739691.

It is an arithmetic number, because the mean of its divisors is an integer number (2209588022880).

Almost surely, 2^{21604153030526} is an apocalyptic number.

21604153030526 is a deficient number, since it is larger than the sum of its proper divisors (13749255335554).

21604153030526 is a wasteful number, since it uses less digits than its factorization.

21604153030526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32165359.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 21604153030526 in words is "twenty-one trillion, six hundred four billion, one hundred fifty-three million, thirty thousand, five hundred twenty-six".