20647141755722 has 8 divisors (see below), whose sum is σ = 30970735608900. Its totient is φ = 10323563219424.

The previous prime is 20647141755689. The next prime is 20647141755739. The reversal of 20647141755722 is 22755714174602.

It can be written as a sum of positive squares in 2 ways, for example, as 19132497113041 + 1514644642681 = 4374071^2 + 1230709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536054 + ... + 6448382.

Almost surely, 2^{20647141755722} is an apocalyptic number.

20647141755722 is a deficient number, since it is larger than the sum of its proper divisors (10323593853178).

20647141755722 is a wasteful number, since it uses less digits than its factorization.

20647141755722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658440.

The product of its (nonzero) digits is 6585600, while the sum is 53.

The spelling of 20647141755722 in words is "twenty trillion, six hundred forty-seven billion, one hundred forty-one million, seven hundred fifty-five thousand, seven hundred twenty-two".