20455572250061 has 32 divisors (see below), whose sum is σ = 22438064288640. Its totient is φ = 18532865836800.

The previous prime is 20455572249997. The next prime is 20455572250097. The reversal of 20455572250061 is 16005227555402.

It is a cyclic number.

It is not a de Polignac number, because 20455572250061 - 2⁶ = 20455572249997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20455572249994 and 20455572250021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455572250661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 909812726 + ... + 909835208.

It is an arithmetic number, because the mean of its divisors is an integer number (701189509020).

Almost surely, 2^{20455572250061} is an apocalyptic number.

It is an amenable number.

20455572250061 is a deficient number, since it is larger than the sum of its proper divisors (1982492038579).

20455572250061 is a wasteful number, since it uses less digits than its factorization.

20455572250061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24957.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 20455572250061 in words is "twenty trillion, four hundred fifty-five billion, five hundred seventy-two million, two hundred fifty thousand, sixty-one".