20555414334544 has 10 divisors (see below), whose sum is σ = 39826115273210. Its totient is φ = 10277707167264.

The previous prime is 20555414334523. The next prime is 20555414334599. The reversal of 20555414334544 is 44543341455502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14957401550400 + 5598012784144 = 3867480^2 + 2366012^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642356697939 + ... + 642356697970.

It is an arithmetic number, because the mean of its divisors is an integer number (3982611527321).

Almost surely, 2^{20555414334544} is an apocalyptic number.

It is an amenable number.

20555414334544 is a deficient number, since it is larger than the sum of its proper divisors (19270700938666).

20555414334544 is a wasteful number, since it uses less digits than its factorization.

20555414334544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284713395917 (or 1284713395911 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 49.

The spelling of 20555414334544 in words is "twenty trillion, five hundred fifty-five billion, four hundred fourteen million, three hundred thirty-four thousand, five hundred forty-four".