20522100605 has 16 divisors (see below), whose sum is σ = 24747403824. Its totient is φ = 16337180160.

The previous prime is 20522100593. The next prime is 20522100629. The reversal of 20522100605 is 50600122502.

It can be written as a sum of positive squares in 8 ways, for example, as 4306115641 + 16215984964 = 65621^2 + 127342^2 .

It is not a de Polignac number, because 20522100605 - 2¹⁴ = 20522084221 is a prime.

It is a super-2 number, since 2×20522100605² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2322095 + ... + 2330915.

It is an arithmetic number, because the mean of its divisors is an integer number (1546712739).

Almost surely, 2^20522100605 is an apocalyptic number.

It is an amenable number.

20522100605 is a deficient number, since it is larger than the sum of its proper divisors (4225303219).

20522100605 is a wasteful number, since it uses less digits than its factorization.

20522100605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11056.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 20522100605 in words is "twenty billion, five hundred twenty-two million, one hundred thousand, six hundred five".