20554035651042 has 64 divisors (see below), whose sum is σ = 42128145168384. Its totient is φ = 6681824654400.

The previous prime is 20554035651029. The next prime is 20554035651119. The reversal of 20554035651042 is 24015653045502.

It is a junction number, because it is equal to n+sod(n) for n = 20554035650985 and 20554035651003.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 598336167 + ... + 598370517.

It is an arithmetic number, because the mean of its divisors is an integer number (658252268256).

Almost surely, 2^{20554035651042} is an apocalyptic number.

20554035651042 is an abundant number, since it is smaller than the sum of its proper divisors (21574109517342).

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

20554035651042 is a wasteful number, since it uses less digits than its factorization.

20554035651042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37863.

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 20554035651042 its reverse (24015653045502), we get a palindrome (44569688696544).

The spelling of 20554035651042 in words is "twenty trillion, five hundred fifty-four billion, thirty-five million, six hundred fifty-one thousand, forty-two".