20455666043552 has 24 divisors (see below), whose sum is σ = 40954670366400. Its totient is φ = 10054479918784.

The previous prime is 20455666043531. The next prime is 20455666043557. The reversal of 20455666043552 is 25534066655402.

It is a junction number, because it is equal to n+sod(n) for n = 20455666043494 and 20455666043503.

It is not an unprimeable number, because it can be changed into a prime (20455666043557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5417282552 + ... + 5417286327.

It is an arithmetic number, because the mean of its divisors is an integer number (1706444598600).

Almost surely, 2^{20455666043552} is an apocalyptic number.

It is an amenable number.

20455666043552 is an abundant number, since it is smaller than the sum of its proper divisors (20499004322848).

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

20455666043552 is a wasteful number, since it uses less digits than its factorization.

20455666043552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10834568948 (or 10834568940 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 53.

The spelling of 20455666043552 in words is "twenty trillion, four hundred fifty-five billion, six hundred sixty-six million, forty-three thousand, five hundred fifty-two".