20321056016356 has 24 divisors (see below), whose sum is σ = 36243129819960. Its totient is φ = 9965985100032.

The previous prime is 20321056016347. The next prime is 20321056016389. The reversal of 20321056016356 is 65361065012302.

It can be written as a sum of positive squares in 4 ways, for example, as 3199948545600 + 17121107470756 = 1788840^2 + 4137766^2 .

It is a super-3 number, since 3×20321056016356³ (a number of 41 digits) contains 333 as substring.

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, 12881641 + ... + 14372848.

It is an arithmetic number, because the mean of its divisors is an integer number (1510130409165).

Almost surely, 2^{20321056016356} is an apocalyptic number.

It is an amenable number.

20321056016356 is a deficient number, since it is larger than the sum of its proper divisors (15922073803604).

20321056016356 is a wasteful number, since it uses less digits than its factorization.

20321056016356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27258063 (or 27258061 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 20321056016356 in words is "twenty trillion, three hundred twenty-one billion, fifty-six million, sixteen thousand, three hundred fifty-six".