20450554653166 has 32 divisors (see below), whose sum is σ = 33601990181760. Its totient is φ = 9257578466400.

The previous prime is 20450554653143. The next prime is 20450554653167. The reversal of 20450554653166 is 66135645505402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450554653167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6694545 + ... + 9258403.

It is an arithmetic number, because the mean of its divisors is an integer number (1050062193180).

Almost surely, 2^{20450554653166} is an apocalyptic number.

20450554653166 is a deficient number, since it is larger than the sum of its proper divisors (13151435528594).

20450554653166 is a wasteful number, since it uses less digits than its factorization.

20450554653166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565360.

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 20450554653166 in words is "twenty trillion, four hundred fifty billion, five hundred fifty-four million, six hundred fifty-three thousand, one hundred sixty-six".