20069255556 has 81 divisors (see below), whose sum is σ = 59030669061. Its totient is φ = 5732373024.

The previous prime is 20069255543. The next prime is 20069255573. The reversal of 20069255556 is 65555296002.

The square root of 20069255556 is 141666.

It is a perfect power (a square), and thus also a powerful number.

20069255556 is a `hidden beast` number, since 2 + 0 + 0 + 6 + 92 + 5 + 5 + 556 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19855628100 + 213627456 = 140910^2 + 14616^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5948286 + ... + 5951658.

Almost surely, 2^20069255556 is an apocalyptic number.

20069255556 is the 141666-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20069255556

20069255556 is an abundant number, since it is smaller than the sum of its proper divisors (38961413505).

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

20069255556 is an equidigital number, since it uses as much as digits as its factorization.

20069255556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770 (or 3385 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

It can be divided in two parts, 20069 and 255556, that added together give a square (275625 = 525²).

The spelling of 20069255556 in words is "twenty billion, sixty-nine million, two hundred fifty-five thousand, five hundred fifty-six".