20305226767556 has 24 divisors (see below), whose sum is σ = 36761526852120. Its totient is φ = 9801972707072.

The previous prime is 20305226767537. The next prime is 20305226767583. The reversal of 20305226767556 is 65576762250302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9133789550656 + 11171437216900 = 3022216^2 + 3342370^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2837705 + ... + 6975888.

It is an arithmetic number, because the mean of its divisors is an integer number (1531730285505).

Almost surely, 2^{20305226767556} is an apocalyptic number.

It is an amenable number.

20305226767556 is a deficient number, since it is larger than the sum of its proper divisors (16456300084564).

20305226767556 is a wasteful number, since it uses less digits than its factorization.

20305226767556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9831463 (or 9831461 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 56.

The spelling of 20305226767556 in words is "twenty trillion, three hundred five billion, two hundred twenty-six million, seven hundred sixty-seven thousand, five hundred fifty-six".